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BEFORE BEGINNING: Someone who has a basic knowledge of automobile repair and modification and is familiar with and comfortable with working
on their vehicle can accomplish the mechanical installation of this kit using common tools and procedures. However, this kit is designed to allow you
to custom fit the fuel lines to your application, and will require that you cut hoses to fit and drill holes for Fuel Pressure Regulator mounting. If you do
not feel comfortable with any of the steps listed below, please consult a qualified professional installer. Make sure to read the instructions provided
with the supplied fuel rail and fuel pressure regulator. These will be referenced throughout this instruction sheet.
AFTER INSTALLATION, BEFORE STARTING THE VEHICLE: ALWAYS make sure to check for any leaks BEFORE starting the vehicle. Reconnect the
battery and turn the ignition key to the "on" position. This will activate the fuel pump and pressurize the fuel system. If any leaks are present, turn
the ignition "off", disconnect the battery, and make the necessary corrections before continuing.
DISASSEMBLY AND FUEL RAIL INSTALLATION
1.
Make sure the vehicle is on level ground, and the gear selector is in
"Park" or in 1st gear. Set the parking brake or chock the wheels.
2.
Disconnect the battery negative terminal. See note on page 1
regarding Honda/Acura security protected audio systems.
3.
Thoroughly clean the area surrounding the fuel injectors and the fuel
rail. This will prevent debris from entering the fuel system or the
intake manifold upon fuel rail removal.
4.
Relieve any residual fuel pressure in the fuel system. Remove the
fuel filler cap, then relieve fuel pressure by loosening the banjo bolt
connecting the fuel line to the fuel filter. Place a shop towel or rag
over the wrench while loosening the banjo to soak up any fuel spray
(See Fig. 1) . When loosening or tightening the banjo bolt on the
fuel filter can, use a 19mm wrench of the hex of the fuel filter can
to counteract the torque of loosening or tightening the banjo bolt.
This will prevent the fuel filter can and bracket from being
improperly loaded during loosening or tightening at the banjo bolt.
If your vehicle has a special banjo bolt at the fuel filter, which has a
service bolt in the top of the banjo bolt, use a 6mm box end wrench
to loosen the service bolt at the fuel filter while holding the banjo
bolt with another wrench. Keep the banjo or service bolt loose until
all pressure is relieved.
Figure 1 - Relieving Fuel Pressure at Fuel Filter
Catalog #641570, 641573
Rev. 5/07 - RS/mc
BEFORE BEGINNING INSTALLATION
INSTALLATION PROCEDURE
5.
Remove the banjo bolt from the fuel filter and disconnect the fuel
supply line from the fuel filter. Using a small, fuel safe container,
allow the excess fuel to drain from the fuel line and fuel rail.
6.
Disconnect the factory fuel return line from the steel tubing on the
firewall. Use rags or a small, fuel safe container to catch any spills.
7.
Disconnect the wiring harness from the fuel injectors and from the
fuel rail. If your vehicle is equipped with a purge valve, disconnect
the wiring from the purge valve.
8.
Remove the vacuum line from the factory fuel pressure regulator.
Refer to the instructions supplied with the 4796 fuel rail, and remove
the fuel rail, factory fuel pressure regulator, supply line, and return
line from the vehicle as one assembly. Use care when separating
the fuel rail from the fuel injectors.
9.
Install the supplied -8AN to -6AN Adapter Fittings (with o-rings) into
the fuel rail using a bit of o-ring lube on the o-rings. Install the 1/8
NPT pipe plugs (supplied with fuel rail) if the gauge ports are not
being used (see fuel rail instructions). Always use liquid teflon
thread sealant on pipe threads.
10. Inspect the injectors and transfer them to the new fuel rail as
described in the fuel rail instructions.
11. Install the fuel rail / injector assembly on the intake manifold as
shown in the fuel rail instructions.
FUEL PRESSURE REGULATOR MOUNTING:
1.
Install the provided fittings into the fuel pressure regulator (See Fig.
2) . Install one -6AN Dry Sump Union in the inlet port and one in the
return port (located at the bottom of the regulator). Install the -6AN
block off plug in the fuel outlet port of the regulator. Slip the -6AN
Female coupling nut over the -6AN female to -4AN male coupling.
Install this assembly over the -6AN dry-sump fitting previously
installed in the return port of the regulator. Install the vacuum fitting
supplied with the regulator in the port on the top half of the
regulator. Install the pressure adjusting screw and jam nut at the
top of the regulator. See the instructions provided with the regulator
for more information.
Page 2
©2007 Edelbrock Corporation
Brochure #63-641570
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