Equus 3640 User Manual
Fuel © IEC 1997
#3640
FUEL INJECTION PRESSURE
TESTER KIT
Table of Contents
i Fuel
Paragraph Title Page No.
GENERAL INFORMATION
1.1 ABOUT THE TESTER ..................................................................... 1-1
1.2 VEHICLES COVERED .................................................................... 1-2
1.3 BEFORE YOU BEGIN ..................................................................... 1-2
1.4 SAFETY PRECAUTIONS ................................................................ 1-3
1.5 VEHICLE SERVICE MANUALS .................................................... 1-4
TESTING
2.1 GENERAL ......................................................................................... 2-1
2.2 TEST PROCEDURES....................................................................... 2-2
WARRANTY AND SERVICE
3.1 LIMITED ONE YEAR WARRANTY................................................ 3-1
3.2 SERVICE PROCEDURES................................................................ 3-1
1 General Information
Engine 1-1
1.1 ABOUT THE TESTER
The Fuel Injection Pressure Tester Kit is designed to perform fuel pressure
tests on most domestic and import cars and trucks. The tester saves you time and
money by helping you test and troubleshoot fuel system problems which can
affect your vehicle's performance and fuel economy.
The tester can help you identify and diagnose:
•
Low fuel pump pressure
•
Leaking fuel injectors
•
Faulty fuel pressure regulator
•
Clogged fuel filter
•
Leaks in the fuel system
1.1.1 Fuel Injection Pressure Tester Kit Components (see Figure 1)
1. Tester Gauge. Shows fuel pressure in system during test.
2. Relief Valve. Relieves pressure in the fuel system during and after
testing.
3. Bleed-Off Hose. Drains bleed-off fuel into a suitable container.
4. Gauge Hose. High pressure hose with threaded female connector;
connects to the vehicle's fuel system test port.
5. Tee Fitting. Universal fitting with built-in test port. Allows the tester to
be used on some vehicles not factory-equipped with a test port (Schrader
valve).
Figure 1. Fuel Injection Pressure Tester Kit Components
10
6
8
1
9
2
7
5
43
1
1-2 Fuel
6. Ford Adapter. Installs on the fuel system test port of Ford and some
Chrysler vehicles to allow connection of the tester.
7, 8. Hose. 5/16" and 3/8" universal high-pressure hoses used in conjunction
with tee fitting (5).
9, 10. Hose Clamp. High-pressure fuel line clamps used in conjunction with
hoses (7, 8) and tee fitting (5).
NOTE:
The adapters provided with the tester are designed to facilitate the
most common fuel injection system applications. Some vehicle
applications may require additional tools or adapters to properly test
the vehicle. Refer to your vehicle's service manual, and consult your
auto parts dealer for the availability of these items.
1.3 BEFORE YOU BEGIN
•
Fix any known mechanical problems before performing any test.
WARNING:
Please be aware that fuel systems are UNDER PRESSURE
AND HIGHLY FLAMMABLE. In addition to following all
safety precautions, a basic understanding of fuel systems is
necessary. Read this manual thoroughly to prevent
accidents, personal injury and/or damage to your vehicle.
•
If a further understanding of fuel injection systems is necessary, many
publications covering this topic are available.
•
Your vehicle’s service manual can give you specialized test procedures and
repair methods which can make your job easier. READ YOUR
VEHICLE’S SERVICE MANUAL.
•
Keep a pencil and paper handy to make notes and record test results.
1.2 VEHICLES COVERED
1.2.1 Domestic Vehicles (1980-98)
•
Dodge, Chrysler, Plymouth
•
Ford, Lincoln, Mercury
•
GMC, Chevrolet, Buick,
Oldsmobile, Pontiac, Saturn,
Cadillac
•
Jeep, Eagle
1.2.2 Import Vehicles (1980-98)
•
Geo
•
Isuzu
•
Mazda
•
Nissan
•
Subaru
•
Suzuki
•
Volkswagen
Fuel System Type/Applications
•
All electronic fuel injection
systems (port, sequential,
multi-point, throttle body),
which are equipped with a
fuel pressure test port
(Schrader valve)
•
All fuel injection systems
(without a fuel pressure test
port) equipped with flexible
rubber fuel supply lines
•
Includes light trucks and vans
•
Excludes diesel
General Information
Fuel 1-3
a. Read and follow all safety precautions.
b. Make sure the battery is fully charged and the vehicle has enough fuel in
the tank.
c. Perform a thorough underhood inspection. Check for loose or cracked
electrical wiring, battery cables, ignition wires, fuel and/or vacuum lines.
Perform necessary repairs and ensure the fuel system is leak-free. WIPE
UP ANY FUEL LEAKS IMMEDIATELY.
d. Verify all related fuses are in good condition. Verify integrity of all
electrical component connections.
e. For Ford vehicles ONLY: Make sure the inertia switch (the fuel system’s
safety switch) is not tripped and is operating properly. (Refer to your
vehicle’s service manual for location.)
f. Check the vapor recovery system and fuel tank cap for proper operation.
g. Make sure the intake (engine) vacuum is within original manufacturer’s
specifications.
h. If the engine does not start, refer to your vehicle’s service manual for proper
diagnostic procedures.
1.4 SAFETY PRECAUTIONS
•
Read this manual COMPLETELY before performing any test
procedures.
•
Always observe safety precautions whenever working on a vehicle.
a. Always wear safety eye protection.
b. Only work on your vehicle in a well-ventilated area.
c. Put transmission in PARK (automatic transmission) or NEUTRAL (manual
transmission). Set parking brake.
d. Put blocks on the drive wheels.
e. Release fuel system pressure before connecting test equipment or
performing tests (refer to your vehicle’s service manual for
procedures).
f. Make sure the ignition is off before connecting or disconnecting any test
equipment.
g. Never connect the Fuel Injection Tester to any location other than those
indicated in the test procedures (many air conditioning fittings resemble
fuel injection test ports).
h. Fuel and battery vapors are highly flammable. DO NOT SMOKE NEAR
THE VEHICLE DURING TESTING.
i. DO NOT attempt to use this tool on systems not covered in this manual.
j. During testing, be careful to avoid fuel spills on hot engine parts. If spills
occur or if leaks are present, turn ignition off IMMEDIATELY and correct
the problem. WIPE UP FUEL SPILLS IMMEDIATELY.
k. Avoid moving fan blades or any potentially moving parts.
l. Avoid hot engine parts. Keep tools away from the battery to avoid possible
shorting and sparks which could start a fire.
m. In case of emergency, keep a fire extinguisher handy. MAKE SURE it is
rated for fuel/electrical and chemical fires.
n. NEVER leave the vehicle unattended during testing.
o. Take care when working near ignition system components (coil, distributor
cap, ignition wires, etc). These are all HIGH VOLTAGE areas.
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