Edelbrock For 1985-1992 GM Cars and Trucks 17933, 17933 Installation Instructions Manual

255 Liter/Hr, In Tank Fuel Pump

For 1985-1992 GM Cars and Trucks

Catalog # 17933

INSTALLATION INSTRUCTIONS

• PLEASE study these instructions carefully before installing your new In-Tank Fuel Pump for 1985-1992 GM Cars and
Trucks. If you have any questions or problems, do not hesitate to contact our Technical Hotline at: 1-800-416-8628,
from 7am-5pm PST, Mon-Fri, or via e-mail at: [e-mail]. Please fill out and mail your warranty card.

• Note: Proper installation is the responsibility of the customer. Improper or incomplete installation could result in poor

performance, related component damage, potential severe engine damage, vehicle fire, and will void your warranty. If you
do not feel comfortable installing these parts, we recommend having the installation performed by a professional mechanic.

• Description: This in-tank fuel pump replaces the factory pump and has an increased flow of 255 liters/hour (67 gph).
This in-tank upgrade pump is ideal for supporting performance improvements such as a big-bore throttle body, high
performance intake manifold, camshaft, supercharger, direct port nitrous system, etc. They replace your original pump
exactly and include all necessary hardware for an easy installation:

Kit Contents:

Qty. Description

❑ 1 Fuel Pump
❑ 1 Fuel Pump Filter
❑ 1 Fuel Pump Adapter Grommet
❑ 1 Fuel Tank to Pump Bracket O-Ring
❑ 1 Electrical Connector

`Minimum Tools Required:

1. Lift or appropriate jack

2. OSHA-approved jackstands

3. OSHA-approved fuel transfer pump

4. OSHA-approved fuel storage containers

5. Wire stripping and crimping tool

6. Various hand tools

❑ 1 6” Section of Fuel Hose**
❑ 2 Hose Clamps**

**Not used in some vehicle applications.

INSTALLATION NOTES

• Remember: When working on your vehicle, especially when oil or fuel is present, always work in a well ­ventilated area. Keep all sparks, open flames, or other sources of ignition away from the work area. Failure
to do so could result in a fire or explosion causing vehicle or property damage, personal injury, and/or death.

• Before Beginning: This installation can be accomplished using common tools and procedures. However, you should have
a basic knowledge of automotive repair and modification and be familiar with and comfortable with working on your vehicle.
If you do not feel comfortable working on your vehicle, it is recommended to have the installation completed by a
professional mechanic. Using a factory service manual for your vehicle for reference is helpful.

• Note: Steps shown in these instructions are intended as a general guideline only. If you are not an experienced mechanic,
you should have a copy of your service manual on hand. The installation procedure for replacing your factory fuel pump is
covered in full detail in your factory service manual.

©2003 Edelbrock Corporation
Rev. 11/03

Catalog #17933

Brochure #63-0223Page 1 of 4

INSTALLATION PROCEDURE

(Note: This rotary fuel injection pump will not work
on carbureted fuel systems. It is for electronic fuel
injection only.)
(Note: The word “bracket” used throughout these
instructions refers to the fuel pump mounting
bracket and fuel level sender assembly.)

PREPARATION

1. Make sure the engine is cool and the vehicle is on level

ground. Set the parking brake.

2. Remove the fuel pump fuse from the fuse block.

3. Start the engine and let it run until it consumes any

fuel in the fuel lines, and runs out of fuel.

4. After the engine stops, crank it again for at least three

seconds to assure the relief of any remaining
pressure.

5. Remove the negative (ground) cable from the battery

and position it so that it cannot make a connection to
the battery during the fuel pump installation
procedure.

6. Drain the fuel tank. Use an OSHA-approved gasoline

transfer pump, and remove as much fuel as possible
through the fuel tank filler neck. Store the fuel in
approved safety containers only.

7. Lift and safely support the vehicle with approved

safety stands with enough height to gain clearance to
remove the fuel tank. If lifting only the rear of the
vehicle, remember to block the front wheels.

8. Once the vehicle is lifted and supported, an alternate

method of fuel removal may be implemented.
Determine which line is the fuel return line going back
to the fuel tank (See Fig. 1). Three lines are attached
to the bracket. The first is the feed line which leads to
the fuel injectors, and has the fuel filter in it. The
second is the return line from the injectors. The last is
the vapor line which leads to the vapor canister. Trace
the return line back from the injectors and remove it
from the bracket. Securely attach a hose to the
exposed fuel return tube which leads into the tank, and
draw the remaining fuel out and into an approved
gasoline storage container.

(Note: Regardless of the method used to remove
fuel from the tank, it is important to remove as much
fuel as possible before removing the tank. This is
required to help prevent fuel spillage, and injury
from excessive weight while removing the tank).

Fuel Pressure Regulator

Fuel Tank

Injector(s)

Fuel Filter

Vapor Canister

Fuel Return Line

Fig. 1

FUEL TANK REMOVAL

(Caution: The fuel tank can be quite awkward to
remove due to its size and weight. Obtain help during
its removal).
(Note: The following instructions may not be specific
to your particular vehicle. See your factory service
manual for specific instructions).

1. Disconnect the electrical connector at the fuel tank to
main harness connector. Support and partially lower the
tank, if needed.

2. Disconnect any hoses attached between the fuel tank and
the vehicle. Be careful to avoid fuel spillage when
disconnecting the fuel lines. Mark the hoses to make
sure they are properly reconnected when the tank is
reinstalled.

3. Remove the fuel filler neck, if necessary.

4. Support the fuel tank and remove the retaining straps to
allow the tank to be removed from the vehicle. Remove
the fuel tank being careful not to spill any remaining fuel.

5. Note the condition and position of all fuel tank mounting
pads and insulators used to isolate the fuel tank from the
vehicle body. Mislocated, deteriorated, or incorrect pads
and/or insulators can cause objectionable transmission of
fuel pump noise into the vehicle.

BRACKET REMOVAL

1. Thoroughly clean all dirt and debris from the top of the
tank. Clean out any dirt from around the locking ring and
retainer. This must be done to prevent dirt of foreign
material from falling into the fuel tank while removing the
bracket.

2. Lubricate the locking ring with penetrating oil to assist in
its removal. Remove the locking ring by rotating in a
counterclockwise direction. This can best be

©2003 Edelbrock Corporation
Rev. 11/03

Catalog #17933

Brochure #63-0223Page 2 of 4