Paxton Superchargers 4.6L SOHC Mustang GT User Manual

Page 21

P/N: 4809655

16AUG07 v1.0 96-03MusGT(4809655v1.0)

4-1

4.0

FUEL INJECTOR REPLACEMENT 1999-

2003 Models Only

B. Install the supplied length of rubber hose to

the end of the hard crank case ventilation line
that runs from the driver’s side valve cover
across the engine, (See Fig. 4.1-b.)

Fig. 4.1-b

Route the hose over the passenger’s side valve
cover and towards the front of the engine.
This hose will be attached to the 3/8"NPT x
3/8" x 90° barbed fitting installed in the air
inlet duct. (See Appendix “G” for fitting and
hose location.) Please note that this hose will
be attached in a later step of the installation.

C. Install the idle air control valve to the throttle

body housing with the original hose, and to the
discharge tube with the supplied length of rub-
ber hose and hose clamps. (See Fig. 4.1-c.)

Disconnect the eight fuel injector wiring clips
and retainers from the fuel injectors. Release
any residual fuel pressure from the rail by
opening the schrader valve on the rail.

Remove the four 8mm headed bolts holding
the factory fuel rail onto the intake manifold.
Lift up on the rails evenly, removing all eight
injectors.

Using a small amount of clean motor oil,
lightly lubricate the O-rings on both ends of
the supplied fuel injectors.

Install the new injectors into the fuel rails
with the terminals facing outward.

Carefully lower the fuel rail/injector assembly
down onto the intake manifold. Check to see
that each injector has been seated properly
into the manifold.

Tighten down the fuel rail assembly with the
original bolts and attach the injector plugs to
the injector terminals.

*** NOTE ***

Make sure injector retainers are secure and properly

installed. Recheck after cycling the fuel system.

Fig. 4.1-c

4.1

AIR DISCHARGE DUCT INSTALLA-

TION (1996-2003 Models)

A. Install the discharge tube assembly as shown,

using the supplied rubber sleeves and stainless
steel clamps. (See Fig. 4.1-a.)

Fig. 4.1-a