Harbor Freight Tools Master Fuel Injection Pressure Test Kit Product manual

Master Fuel Injection Pressure Test Kit

Item 97706

Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

When unpacking, make sure that the product is intact and undamaged.

If any parts are missing or broken, please call 1-800-444-3353 as soon as possible.

Visit our website at: http://www.harborfreight.com

Copyright© 2006 by Harbor Freight Tools®. All rights reserved. No portion of this manual or any artwork contained herein may be reproduced in any shape or

form without the express written consent of Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing improve-

Manual Revised 11c

ments, actual product may differ slightly from the product described herein. Tools required for assembly and service may not be included.

Product Specications

Product
Features

Material Brass / Steel / Aluminum / Polyurethane / Rubber /

Contents - Fuel Gauge w/Quick Release Valve

- Allows for accurate and quick diagnoses of fuel
intake issues.

- Compatible with most domestic and import cars.

- Includes all necessary adapter clamps and hoses.

- Quick, convenient hook ups.

Vinyl / Thermoplastic

- Seven Various Hose Assemblies

- Four Metric Paired Hose Adapters

- Two Steel Hose Clamps

- Four Copper Washers

- Fifteen Metric Sized Fittings

- 8 SAE Sized Fittings

- Case

Save This Manual

You will need this manual for the safety warnings and
precautions, assembly, operating, inspection, maintenance
and cleaning procedures, parts list and assembly diagram.
Keep your invoice with this manual. Write the invoice
number on the inside of the front cover. Keep this manual
and invoice in a safe and dry place for future reference.

General Safety Warnings

WARNING Read all safety warnings and

instructions. Failure to follow the warnings and

instructions may result in electric shock, re and/

or serious injury.

Save all warnings and instructions
for future reference.

1. Keep your work area clean and well lit.
Cluttered and dark work areas invite accidents.

2. Stay alert. Watch what you are doing, and
use common sense when operating tools
and equipment. Do not assemble or use this

product while tired or under the inuence of

drugs, alcohol, or medication. A moment of
inattention while operating tools and equipment
may result in serious personal injury.

3.

4. Do not force the Pressure Test Kit. Use
the correct product for your application. The
correct product will do the job better and
safer at the rate for which it is designed.

5. Maintain the Pressure Test Kit with care.
Keep this product clean. Properly maintained

REV 11c

products are less likely to malfunction. Do

Wear eye protection. Wear ANSI­approved safety impact glasses and full
face shield when using this product.

not use damaged products. Tag damaged
products “Do not use” until repaired.

6. Check for any condition that may negatively
affect the Pressure Test Kit’s operation. If
readings are inconsistent, or if it appears that
the fuel gauge is not functioning properly,

the Test Kit should be serviced by a qualied

service technician. Many accidents are
caused by poorly maintained products.

7. Use only accessories that are recommended by
the manufacturer for your model. Accessories
that may be suitable for one product may become
hazardous when used on another product.

8. Industrial applications must follow

OSHA requirements.

9. Maintain labels and nameplates on the
Pressure Test Kit. These carry important

information. If unreadable or missing, contact
Harbor Freight Tools for a replacement.

10. Use the right product for the job. There are
certain applications for which this product was
designed. Do not use small products to do the
work of larger industrial products. Do not use this
product for a purpose for which it was not intended.

11. Product service must be performed only
by qualied service technician. Service

or maintenance performed by unqualied

personnel could result in a risk of injury.

12. When servicing the Pressure Test Kit, use
only identical replacement parts. Follow
instructions in the “Inspection, Maintenance,
And Cleaning” section of this manual. Use of
unauthorized parts or failure to follow maintenance
instructions may create a risk of personal injury.

13. Always make sure the area of use for this
product is clear of any children. Do not
allow children to play with this product.

14. Do not allow the vehicle’s engine to run while
using the Pressure Test Kit. When running, the
engine of a vehicle produces carbon monoxide, a
colorless, odorless, toxic gas that, when inhaled,
can cause serious personal injury or death.

15. Prior to using this product, make sure

to read and understand all instructions
and safety precautions as outlined in
the vehicle manufacturer’s manual.

16. Always keep hands and ngers away from

the moving parts and hot parts of an engine.

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 2

17. Do not use this Pressure Test

Kit on diesel fuel systems.

18. Do not smoke while performing any

fuel injection tests or repairs.

19. Always have a dry chemical (Class

B) re extinguisher within reach.

30. The warnings and cautions discussed in this
manual cannot cover all possible conditions and
situations that may occur. It must be understood
by the operator that common sense and caution
are factors which cannot be built into this
product, but must be supplied by the operator.

20. Make sure to provide a suitable container to

catch released fuel when the system
is de-pressurized.

21. Take extra care to prevent fuel from contacting
hot engine parts. It is recommended that
tests be performed when the engine is cold.

22. If a drop light is used, do not allow fuel

to contact the hot surface of the bulb.

23. Never remove any ttings with

the engine running.

24. Never loosen any ttings or attempt to remove

hoses of vehicle or Pressure Test Kit until you
have relieved the fuel system pressure. Refer

to the vehicle manufacturer’s service manual

for specic fuel pressure relief procedures.

25. Always check all connections for leaks
during the testing procedure. At any sign

of leaks, turn off the engine or disable the
fuel pump. Clean up any spilled fuel and
repair all leaks before resuming test.

SAVE THESE INSTRUCTIONS.

26. When preparing for pressure testing,
make sure the vehicle’s transmission is
placed in “PARK” or “NEUTRAL” and
the emergency brake is applied.

27. When the test is complete, de-pressurize
the system and remove the Pressure Test
Kit. Re-assemble the vehicle’s fuel line(s) to its

original condition. Start the engine and check for
leaks. If any leaks are present, stop the engine,
relieve fuel pressure and repair all leaks.

28. WARNING: The brass components of this
product contain lead, a chemical known to
the State of California to cause birth defects
(or other reproductive harm). (California
Health & Safety code § 25249.5, et seq.)

29. People with pacemakers should consult their

physician(s) before use. Electromagnetic elds in

close proximity to heart pacemaker could cause
pacemaker interference or pacemaker failure.
Caution is necessary when near coil, spark plug
cables, or distributor of running engine. Engine
should be off during distributor adjustment.

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 3

REV 11c

Applications

# Picture Description Application

1

2

3

4

5

6

7

Basic Gauge with Boot
and Hook - 100 PSI

General Motors® 2.5L & 5.7L
(Non Multi-Port)

General Motors® 2.2L
(Non Multi-Port)

Hose Clamps and
Connection Hoses

General Motors® Throttle
Body Injection (TBI)

Parts Seals, Tank Valve, and Gasket.

Double End Barbed Hose
Adapter

Connects to #8 for basic testing.

For vehicles with quick connect fuel lters such

as 2.5L Oldsmobile® Ciera 1989 & up, and 5.7L
Chevrolet® Caprice 1991 & up.

1992 & up: Chevrolet® Cavalier, Pontiac®
Sunbird, Buick® Skylark, and Quad 4 equipped
Pontiac® Grand Am.

For use in making certain hook up connections.

Inline Adapter - Replaces fuel lter with threads

on both ends.

When vehicles require testing by splicing into
1/4", 5/16", or 3/8" fuel line hose.

8

9

Single End Barbed Hose
Adapter

Honda®, Acura® & Sterling
Multi-Port (PGM-FI)

All vehicles requiring end of line testing with
1/4", 5/16", or 3/8" fuel line hose.

®

For vehicles with 6mm-1.00 ttings.

REV 11c

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 4

10

THRU

14

15

THRU

24

Asian and European vehicles
with Multi-Port & Bosch® AFC

E & K Jetronic® Systems

CISE

For vehicles with 8mm-1.00, 10mm-1.00, 2mm-

1.25, 12mm-1.50, & 14mm-1.50 Banjo Bolts.

Test CIS (Continuous Injection Systems) found
on European cars and Volkswagon® models
assembled in the U.S. For vehicles with
metric threads.
Test CISE (Constant Injection System
Electronic) found on European cars with metric
threads.

25

Pressure Testing and
Bleed-off Assembly

For use in performing tests with Basic Gauge
(1) and Adapters.

26 Ford® Multi-Port (EFI) For smaller Schrader® valves.

®

For larger Schrader® valves on
Multi-Port vehicles.

Inline Adapter for vehicles with 3/8” hair pins.

For use in testing with Basic Gauge (1),
Pressure Testing, and Bleed-off Assembly (25)
and Adapters.

27

28

29

30

31

General Motors®, Chrysler
& Imports with 7/16”-20
threaded test port

Ford® CFI For 5/16" hair pin connections.

General Motors® and
Chrysler® Inline Adapter

Ford® EFI For Spring Lock ttings.

CIS Testing Assembly
with Ball Valve

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 5

REV 11c

Typical Hook-Ups

Note: Prior to using this product, make sure to read and

understand all instructions and safety precautions as outlined
in the vehicle manufacturer’s manual.

GM® Multi-Port and Chrysler® Multi-Port:

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

®

GM

/Chrysler

Adapter (27)

®

Figure A

1.

2. Relieve the fuel pressure. Refer to the

3. Connect the Gauge (1) to the Pressure

4. Remove the protective cap from

5. Attach the swivel female tting on the Adapter (27)

6. Attach the female quick coupler on the Pressure

7. Start the engine and allow it to

8. Read the Gauge (1) and compare the result

9. Stop engine and turn ignition OFF.

10. With free end of Bleed-off Hose in suitable

11. Refer to the General Safety Rules section

12. Replace the protective cap onto the test

REV 07f, 07i, 11c

Turn off the ignition.

vehicle’s service manual for specic

pressure relief procedures.

Testing and Bleed-off Assembly (25).

test tting on vehicle.

to the test tting on the vehicle. Hand tighten.

Testing and Bleed-off Assembly (25) to the
male quick connector on the Adapter (27).

idle. Check for leaks.

with the pressure in service manual.

container, press the Button on side of bleed-off
assembly slowly to de-pressurize the fuel system.

before removing Tester from vehicle.

tting on vehicle. Check for leaks.

Ford® Multi-Port (EFI):

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

Ford® Adapter

(26)

Figure B

1.

2. Relieve the fuel pressure. Refer to the

3. If the vehicle has multi-port fuel injection, the

4. Connect the Gauge (1) to the Pressure

5. Attach the female end of Ford® Adapter

6. Attach the female quick coupler on the Pressure

7. Start the engine and allow it to

8. Read the Gauge (1) and compare result

9. Stop the engine and turn the ignition OFF.

10. With free end of bleed-off hose in suitable

11. Refer to the General Safety Rules section

12. Replace the protective cap onto test

Turn off the ignition.

vehicle’s service manual for specic

pressure relief procedures.

test valve is located on the fuel rail. Remove
the protective cap from the test valve.

Testing and Bleed-off Assembly (25).

(26) to test the valve. Hand tighten.

Testing and Bleed-off Assembly (25) to the male
quick coupler on the Ford® Adapter (26).

idle. Check for leaks.

with pressure in service manual.

container, press the button on side of bleed-off
assembly slowly to de-pressurize the fuel system.

before removing the tester from the vehicle.

tting on vehicle. Check for leaks.

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 6

Asian And European Multi-Port Vehicles
(Bosch

®

AFC):

Gauge

(1)

9. Start the engine and allow it to
idle. Check for leaks.

10. Read the Gauge (1) and compare the result
with pressure in the service manual.

11. Stop the engine and turn the ignition OFF.

Pressure Testing

And

Bleed-Off Assy.

(25)

Adapters

(10, 11, 12, 13, 14)

Gaskets (6)

Figure C

1.

2. Relieve the fuel pressure. Refer to the

3. The pressure test connection for these

Turn off the ignition.

vehicle’s service manual for specic

pressure relief procedures.

vehicles is located at the point where the
fuel inlet meets the fuel rail or cold start
injector. The fuel inlet is secured to the fuel

rail of cold start injector by a banjo tting.

12. With free end of bleed-off hose in a suitable
container, press the button on side of bleed-off
assembly slowly to de-pressurize the fuel system.

13. Refer to General Safety Rules section
before removing tester from vehicle.

14. Remove the Tester and the pressure test Adapter.

15. Re-assemble the banjo tting to the fuel
inlet and fuel rail (or cold start injector).
New Gaskets (6) should be used when re­assembling fuel lines. Check for leaks.

GM® Throttle Body Injection (TBI) With Fuel
Filter Threaded On Both Sides:

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

4. Remove the banjo tting that secures the fuel inlet
to the fuel rail or cold start injector. Place a shop
cloth around the bolt to catch any spilled fuel.

5. Install one of the ve pressure test Adapters (10,
11, 12, 13, 14) with the corresponding sealing
washer and one of the gaskets from the banjo

tting so that the fuel inlet is once again connected

to the fuel rail or cold start injector. The test
Adapter will hold the banjo assembly in position.

6. Torque the Adapters (10, 11, 12, 13,

14) to the following specications:

Adapter # Size Torque Specications

10 8mm-1.00 48 In./Lb. (5.5 N-m)
11 10mm-1.00 72 In./Lb. (8.0 N-m)
12 12mm-1.25 96 In./Lb. (11.0 N-m)
13 12mm-1.50 96 In./Lb. (11.0 N-m)
14 14mm-1.50 125 In./Lb. (14.0 N-m)

7. Connect the Gauge (1) to the Pressure
Testing and Bleed-off Assembly (25).

8. Attach the female quick coupler on the
Pressure Testing and Bleed-off Assembly to
the male quick coupler on the test Adapter.

Figure D

Gm TBI Adapter (5)

1.

2. Relieve the fuel pressure. Refer to the vehicle’s

3. Locate the fuel lter on the vehicle.

4. Remove the fuel lter by unscrewing the fuel lines

Turn off the ignition.

service manual for specic pressure relief

procedures.

from both ends of the fuel lter. Use a container

to catch any fuel that may spill out. Wipe off any
excess fuel that may spill on the vehicle.

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 7

REV 11c

5. Install the GM® TBI Adapter (5) in place of the

fuel lter by threading each fuel line into either

end of the Adapter. Do not overtighten.

6. Connect the Gauge (1) to the Pressure
Testing and Bleed-off Assembly (25).

7. Attach the female quick coupler on the Pressure
Testing and Bleed-off Assembly to the male
quick coupler on the GM® TBI Adapter (5).

4. Remove the fuel lter by compressing the tabs
while pulling outward on each fuel line. Use a
container to catch any fuel that may spill out. Wipe
off any excess fuel that may spill on the vehicle.

5. Install the fuel pressure Adapter (2) in place

of the fuel lter by pushing each of the

Adapter’s male tubes into the fuel lines.
Make sure the nylon clips on the tubes are
seated inside the fuel line connectors.

8. Start the engine and check for leaks. Read
the fuel pressure. Compare the value on the
Gauge (1) to the value in the service manual.

9. Stop the engine and turn the ignition OFF.

10. With free end of bleed-off hose in a suitable
container, press the button on side of bleed-off
assembly slowly to de-pressurize the fuel system.

11. Refer to the General Safety Rules section
before removing tester from vehicle.

12. Remove the fuel pressure Adapter following the

above instructions for removing the fuel lter.

13. Re-install the fuel lter. Start the
vehicle and check for leaks.

GM® Throttle Body Injection (TBI)
With Quick Connect Fuel Filter (2.5L
1989 And Up, 5.7L 1991 And Up):

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

6. Connect the Gauge (1) to the Pressure
Testing and Bleed-off Assembly (25).

7. Attach the female quick coupler on the
Pressure Testing and Bleed-off Assembly to
the male quick coupler on the Adapter (2).

8. Start the engine and check for leaks. Read
the fuel pressure. Compare the value on the
Gauge (1) to the value in the service manual.

9. Stop the engine and turn the ignition OFF.

10. With free end of bleed-off hose in a suitable
container, press button on side of bleed-off
assembly slowly to de-pressurize the fuel system.

11. Refer to General Safety Rules section
before removing tester from vehicle.

12. Remove the fuel pressure Adapter following the

above instructions for removing the fuel lter.

13. Re-install the fuel lter. Start the
engine and check for leaks.

GM® 2.2L Engines, 1992 And Up:

Gauge

(1)

Adapter

(2)

Figure E

1.

2. Relieve the fuel pressure. Refer to the

3. Locate the fuel lter on the vehicle.

REV 11c

Turn off the ignition.

vehicle’s service manual for specic

pressure relief procedures.

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 8

1.

Pressure Testing

And

Bleed-Off Assy.

(25)

Adapter (3)

Figure F

Turn off the ignition.

2. Relieve the fuel pressure. Refer to the

vehicle’s service manual for specic

pressure relief procedures.

3. Locate the fuel lter on the vehicle.

4. Remove the fuel lter by unscrewing the steel fuel

line from one end of the fuel lter. Remove the

nylon fuel line on the other end by compressing
the tabs while pulling outward on the fuel line.
Use a container to catch any fuel that may spill
out. Wipe off any excess fuel that may spill out.

5. Install the fuel pressure Adapter (3) in place

of the fuel lter by threading the steel fuel line

into the threaded end of the Adapter. Do not
overtighten. Connect the other end of the
Adapter by pushing the male tube into the
nylon fuel line. Make sure the nylon clip on the
tube is seated inside the fuel line connector.

6. Connect the Gauge (1) to the Pressure
Testing and Bleed-off Assembly (25).

7. Attach the female quick coupler on the Pressure
Testing and Bleed-off Assembly (25) to the
male quick coupler on the Adapter (3).

8. Start the engine and check for leaks. Read
the fuel pressure. Compare the value on the
Gauge (1) to the value in the service manual.

9. Stop the engine and turn the ignition OFF.

10. With free end of bleed-off hose in a suitable
container, press button on side of bleed-off
assembly slowly to de-pressurize the fuel system.

Ford® Central Fuel Injection (CFI) 1.9L And

2.3L With 5/16” Hair Pin Coupling And GM

®

And Chrysler

Adapter

(28 Or 29)

3/8” Hair Pin Coupling:

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

Figure G

1.

2. Relieve the fuel pressure. Refer to the

3. The connection with the vehicle’s fuel injection

4. Attach the Hair Pin Adapter (28 for Ford® and

Turn off the ignition.

vehicle’s service manual for specic

pressure relief procedures.

system is at the throttle body. Remove the fuel line
at the inlet by prying up on the hair pin from the
coupling with a small screwdriver. Use care as the
hair pin is made of plastic. Once disconnected,
re-install the hair pin into the hair pin coupling.

29 for GM® and Chrysler®) to the disconnected
fuel line. Make sure both ends of mating
parts are seated and locked together.

®

11. Refer to General Safety Rules section
before removing tester from vehicle.

12. Remove the fuel pressure Adapter (3)
following the above instructions for removing

the fuel lter. Re-install the fuel lter. Start

the engine and check for leaks.

5. Connect the Gauge (1) to the Pressure Testing
and Bleed-off Assembly (25). Attach the
female quick coupler on the Pressure Testing
and Bleed-off Assembly (25) to the male
quick coupler on the Adapter (28 or 29).

6. Start the engine and allow it to idle.
Check all connections for leaks.

7. Read the Gauge (1) and compare the result with
the pressure values in the service manual.

8. Stop the engine and turn the ignition OFF.

9. With free end of bleed-off hose in a suitable
container, press button on side of bleed­off assembly slowly to de-pressurize the
fuel system. Refer to General Safety Rules
section before removing tester from vehicle.

10. Remove the fuel pressure Adapter following the
above instructions. Re-install the vehicle’s fuel
line. Start the engine and check for leaks.

REV 11c

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 9

Ford® Central Fuel Injection (CFI) With Spring
Lock Fittings - 2.5L:

Honda®, Acura®, & Sterling®
Multi-Port (PGM-FI):

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

Adapter (30)

Figure H

1.

2. Relieve the fuel pressure. Refer to the

3. The connection with the vehicle’s fuel

4. A disconnect tool (not included) is

5. After the spring lock tting has been disconnected,

6. Connect the Gauge (1) to the Pressure

7. Start the engine and allow it to idle.

8. Read the Gauge (1) and compare the result with

9. Stop the engine and turn the ignition OFF.

10. With free end of bleed-off hose in a suitable

11. Using a disconnect tool, remove the test

REV 11c

Turn off the ignition.

vehicle’s service manual for specic

pressure relief procedures.

injection system is on the fuel rail.

required to separate the spring lock

tting on the vehicle’s fuel line.

assemble the Ford® Spring Lock Adapter
(30) into the line, making sure both ends of
the mating couplings are locked together.

Testing and Bleed-off Assembly (25). Attach
the female quick coupler on the Pressure
Testing and Bleed-off Assembly (25) to the
male quick coupler on the Adapter (30).

Check all connections for leaks.

the pressure values in the service manual.

container, press button on side of bleed­off assembly slowly to de-pressurize the
fuel system. Refer to General Safety Rules
section before removing tester from vehicle.

Adapter (30) and install the vehicle’s fuel
line. Start the vehicle and check for leaks.

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

Adapter (9)

Figure I

1.

2. Relieve the fuel pressure. Refer to the

3. The test port is at the vehicle’s fuel lter,

4. The Fuel outlet is secured to the fuel lter by a

5. Place a shop cloth around the fuel outlet

6. Screw the small male end of the Honda

7. Connect the Gauge (1) to the Pressure

8. Start the engine and allow it to idle.

9. Read the Gauge (1) and compare the result with

10. Stop the engine and turn the ignition OFF.

11. With free end of bleed-off hose in a suitable

12. Re-install the hex bolt on the fuel

Turn off the ignition.

vehicle’s service manual for specic

pressure relief procedures.

under the hood, just forward of the rewall.

“double D” bolt. Within this bolt is a smaller hex
bolt that provides access to the test connection.

and slowly remove the smaller hex bolt.

®

Adapter (9) into the hole where the
removed hex bolt was. Hand tighten.

Testing and Bleed-off Assembly (25). Attach
the female quick coupler on the Pressure
Testing and Bleed-off Assembly (25) to the
male quick coupler on the Adapter (9).

Check all connections for leaks.

the pressure values in the service manual.

container, press button on side of bleed­off assembly slowly to de-pressurize the
fuel system. Refer to General Safety Rules
section before removing tester from vehicle.

lter. Check for leaks.

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 10

Ford® Throttle Body Injection
With Small Schrader

®

Valve:

All Vehicles With 1/4”, 5/16”,
or 3/8” Fuel Line Hose:

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

Adapter

(26)

Figure J

1.

2. Relieve the fuel pressure. Refer to the

3. Remove the air cleaner assembly. The test valve

4. Connect the Gauge (1) to the Pressure

5. Attach the female end of the Ford®

6. Attach the female quick coupler on the Pressure

7. Start the engine and allow it to idle.

8. Read the Gauge (1) and compare the result with

9. Stop the engine and turn the ignition OFF.

10. With free end of bleed-off hose in a suitable

Turn off the ignition.

vehicle’s service manual for specic

pressure relief procedures.

is located at the top of the throttle body unit.

Testing and Bleed-off Assembly (25).

Adapter (26) to the test valve.

Testing and Bleed-off Assembly (25) to the
male quick coupler on the Adapter (26).

Check all connections for leaks.

the pressure values in the service manual.

container, press button on side of bleed-off
assembly slowly to de-pressurize the fuel system.

Gauge

(1)

Adapter

(7)

To Inlet Fuel

Line Hose

Pressure Testing

And

Bleed-Off Assy.

(25)

Hose & Hose Clamps

(4)

To Throttle Body

Inlet

Or

Discharge Side Of

Fuel Pump

Figure K

1.

2. Relieve the fuel pressure. Refer to the

3. Loosen the hose clamp and disconnect the fuel

4. Assemble the Double End Barbed Adapter

5. Connect the Double End Barbed Adapter (7) as

6. Connect the Gauge (1) to the Pressure

7. Attach the female quick coupler on the Pressure

8. Start the engine and allow it to idle. Check

9. Stop the engine and turn the ignition OFF.

Turn off the ignition.

vehicle’s service manual for specic

pressure relief procedures.

line hose from the inlet side of the vehicle’s
throttle body or discharge side of the fuel pump.

(7) and Hose (4) with Hose Clamps (4).

assembled above between the disconnected
fuel line and the throttle body inlet or fuel
pump. Tighten all Hose Clamps (4) securely.

Testing and Bleed-off Assembly (25).

Testing and Bleed-off Assembly (25) to the
male quick coupler on the Adapter (7).

all connections for leaks. Read the
Gauge (1) and compare the result with the
pressure values in the service manual.

11. Refer to the General Safety Rules section
before removing tester from vehicle.

12. Start the vehicle and check for leaks.

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 11

10. With free end of bleed-off hose in a suitable
container, press button on side of bleed-off
assembly slowly to de-pressurize the fuel
system. Refer to the General Safety Rules
section before removing tester from vehicle.

11. Replace the vehicle’s fuel line and tighten all
clamps securely. Check all connections for leaks.

REV 11c

All Vehicles Requiring End Of Line Testing
With 1/4”, 5/16”, Or 3/8” Fuel Line Hose:

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

Chrysler® Throttle Body Injection:

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

Adapter

(7)

To Inlet

Fuel Line

Hose

Hose & Hose

Clamps

(4)

Figure M

To Throttle

Body Inlet

Nipple

Adapter

(8)

Figure L

1.

2. Relieve the fuel pressure. Refer to the

3. Loosen the hose clamp and

4. Install the Single End Barbed Hose Adapter (8) into

5. Connect the Gauge (1) to the Pressure

6. Attach the female quick coupler on the Pressure

7. Start the engine and allow it to idle. Check

8. Stop the engine and turn the ignition OFF.

9. With free end of bleed-off hose in a suitable

10. Reconnect vehicle’s fuel line and tighten all clamps

Turn off the ignition.

vehicle’s service manual for specic

pressure relief procedures.

disconnect the fuel line.

the fuel supply hose. Tighten hose clamp securely.

Testing and Bleed-off Assembly (25).

Testing and Bleed-off Assembly (25) to the
male quick coupler on the Adapter (8).

all connections for leaks. Read the
Gauge (1) and compare the result with the
pressure values in the service manual.

container, press button on side of bleed-off
assembly slowly to de-pressurize the fuel
system. Refer to the General Safety Rules
section before removing tester from vehicle.

securely. Check all connections for leaks.

1.

Turn off the ignition.

2. Relieve the fuel pressure. Refer to the

vehicle’s service manual for specic

pressure relief procedures.

3. Loosen the hose clamp and disconnect
the fuel line hose from the inlet side
of the vehicle’s throttle body.

4. Conrm if the size of the inlet fuel
line hose is 1/4" or 5/16".

5. Assemble the correct Hose (4) and Hose Clamps
(4) onto the Double End Barbed Adapter (7).

6. Connect the Adapter assembly between
the disconnected fuel line and the throttle
body inlet nipple on the vehicle. Tighten
all Hose Clamps (4) securely.

7. Connect the Gauge (1) to the Pressure
Testing and Bleed-off Assembly (25). Attach
the female quick coupler on the Pressure
Testing and Bleed-off Assembly (25) to the
male quick coupler on the Adapter (7).

8. Start the engine and allow it to idle. Check
all connections for leaks. Read the
Gauge (1) and compare the result with the
pressure values in the service manual.

9. Stop the engine and turn the ignition OFF.

10. With free end of bleed-off hose in a suitable
container, press button on side of bleed-off
assembly slowly to de-pressurize the fuel
system. Refer to the General Safety Rules
section before removing tester from vehicle.

11. Reconnect vehicle’s fuel line and tighten all clamps
securely. Check all connections for leaks.

REV 11c

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 12

Bosch® Continuous Injection
System (CIS) Testing:

Constant Injection System Electronic
(CISE) - European Vehicles:

Gauge

Pressure

(1)

Testing

And

Bleed-Off

Assy.

(25)

CIS Testing

Assembly

With

Ball Valve

(31)

(10, 11, 12, 13,

“O-Rings”

Figure N

1.

2. Clean the top of the fuel distributor to keep

3. Relieve the fuel pressure. Refer to the

4. The CIS system has a primary circuit with

Turn off the ignition.

dirt from entering the fuel system.

vehicle’s service manual for specic

pressure relief procedures.

pressure regulated at the fuel distributor. This
is known as supply pressure, primary pressure,
or line pressure. The side of the tester without
the ball valve is connected to this circuit. The
other circuit is known as the control circuit. This
contains the control pressure regulator, known as
the warm-up compensator. The side of the test
with the ball valve is connected to this circuit.

Adapters

15, 16, 18, 19,
20, 21, 22, 23,

Or 24)

And

Gauge

(1)

Pressure Testing

And

Bleed-Off Assy.

(25)

Adapters

(10, 11, 12, 13, 15,
16, 18, 19, 20, 21,

22, 23, Or 24)

And

“O-Rings”

Figure O

1.

2. Clean the top of the fuel distributor to keep

3. Relieve the fuel pressure. Refer to the

4. Connect the Gauge (1) to the Pressure

5. Install Adapter(s) (10, 11, 12, 13, 15,

Turn off the ignition.

dirt from entering the fuel system.

vehicle’s service manual for specic

pressure relief procedures.

Testing and Bleed-off Assembly (25).

16, 18, 19, 20, 21, 22, 23, or 24) and
“O-Ring” to the engine as required.

5. Connect the Gauge (1) to the Pressure
Testing and Bleed-off Assembly (25).

6. Install Adapter(s) (10, 11, 12, 13, 15, 16,
18, 19, 20, 21, 22, 23, or 24) and “O-Ring”
to the engine as required. Hand tighten
only. Then connect Hoses to Adapters.

7. Attach the female quick coupler on the Pressure
Testing and Bleed-off Assembly (1) to the male
quick coupler on the CIS Testing Assembly with
Ball Valve (31). With free end of bleed-off hose in a
suitable container, press button on side of bleed-off
assembly slowly to release any air in the test Hose.

8. Refer to the General Safety Rules section
before removing tester from vehicle. Remove
tester and Adapters from vehicle. Reconnect
vehicle’s fuel injection lines to original condition.
Start the vehicle and check for leaks.

6. Attach the female quick coupler on the
Pressure Testing and Bleed-off Assembly (1)
to the male quick coupler on the Adapter.

7. Start the engine and allow it to idle.
Check for leaks. Read the fuel pressure.
Compare the value on the Gauge (1) to
the value in the service manual.

8. With free end of bleed-off hose in a suitable
container, press button on side of bleed-off
assembly slowly to release any air in the test
Hose. Refer to the General Safety Rules
section before removing tester from vehicle.

9. Remove tester and Adapter(s) from vehicle.

10. Reconnect vehicle’s fuel injection
lines to original condition.

11. Start vehicle and check for leaks.

REV 11c

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 13

Inspection, Maintenance and Cleaning

1. CAUTION! Make sure to wear ANSI-approved safety impact goggles before
performing any inspection, maintenance, or cleaning of Pressure Test Kit.

2. Before each use: Inspect the general condition of the Pressure Test Kit. Check for damaged
parts, and any other condition that may affect this product’s safe operation. If a problem occurs,
have the problem corrected before further use. Do not use damaged equipment.

3. To clean: Use a clean, soft, damp cloth and mild detergent. Then allow to air-dry. Do not use solvents.

4.

CAUTION! All maintenance, service, and repairs not discussed in this

manual should only be performed by a qualied service technician.

PLEASE READ THE FOLLOWING CAREFULLY

THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS MANUAL AS
A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY
OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE
MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE
UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISKS
AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR
ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.

REV 11c

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 14

Parts List And Assembly Diagram

Part Description

1 0-100 PSI (0-7.0 Bar) Gauge w/Boot & Hang-Up Hook
2

3

®

GM

2.5L & 5.7L Fuel Injection Pressure Test Adapter

®

GM

2.2L Fuel Injection Pressure Test Adapter
4 Hose Clamps & Hoses
5

®

GM

Throttle Body Injection (TBI) Fuel Pressure

Adapter
6 Seals, Tank Valve & Gasket
7 Double End Barbed Hose Adapter
8 Single End Barbed Hose Adapter
9

6mm-1.00 Honda

®

& Acura® Multi-Port (PGM-FI)

Adapter
10 8mm-1.00 Banjo Bolt Adapter
11 10mm-1.00 Banjo Bolt Adapter
12 12mm-1.25 Banjo Bolt Adapter
13 12mm-1.50 Banjo Bolt Adapter
14 14mm-1.50 Banjo Bolt Adapter
15 8mm-1.00 Long Adapter
16 8mm-1.00 Female Adapter

33: CARRYING CASE NOT SHOWN.

3

2

1

9

10

11

Part Description

17 8mm-1.00 Male Adapter w/O-Ring (1 Pieces)
18 8mm-1.00 Male Adapter (Long)
19 10mm-1.00 Female Adapter
20 10mm-1.00 Male Adapter
21 12mm-1.50 Female Swivel Adapter (2 Pieces)
22 14mm-1.50 Male & Female Swivel Adapter
23 1/4” BSPT Male & Female Swivel Adapter
24 16mm-1.50 Male & Female Swivel Adapter
25 Pressure Testing & Bleed-Off Assy.
26

Small Schrader

27

Large Schrader

Chrysler

28

5/16” Hair Pin Adapter for Ford

29

3/8” Hair Pin Adapter for GM

30

Spring Lock Adapter for Ford® EFI

®

Valve Test Adapter for Ford

®

Valve Test Adapter for GM® &

®

®

®

CFI

& Chrysler

®

31 CIS Testing Assy. w/Ball Valve
33 Carrying Case (not shown)

18

19

20

25

®

12

13

8

14

4

6

5

26

27

28

29

30

7

15

16

17

22

23

24

21

31

Some parts are listed and shown for illustration purposes only,

NOTE:

and are not available individually as replacement parts.

SKU 97706 For technical questions, please call 1-800-444-3353. PAGE 15

REV 11c

Limited 90 Day Warranty

Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability
standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship
for the period of 90 days from the date of purchase. This warranty does not apply to damage due directly or
indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity,
improper installation, normal wear and tear, or to lack of maintenance. We shall in no event be liable for death,
injuries to persons or property, or for incidental, contingent, special or consequential damages arising from the use
of our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.

To take advantage of this warranty, the product or part must be returned to us with transportation
charges prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.

If our inspection veries the defect, we will either repair or replace the product at our election or we may

elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will
return repaired products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning the product.

This warranty gives you specic legal rights and you may also have other rights which vary from state to state.

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]

REV 11c