Fuel injector replacement – Paxton Superchargers Ford 5.0L Mustang GT User Manual

Page 51

P/N: 4809664 v3.1, 06/12/2012

Disconnect the fuel feed line from the fitting near

the driver side fuel rail.

CAUTION: The fuel line

may be pressurized. Take care to avoid spray

and spills.

Remove the four (4) 10mm hex nuts securing the

plastic heater hose guides and set the guides

aside for later reinstallation. (See Fig. 9B)

Reposition the vacuum tube assembly mounted

under the driver side heater hose guide to facili-

tate fuel rail removal.

Remove the foam insulation from each fuel rail (2

pieces total).

Unplug each of the eight (8) fuel injector electrical

connectors.

Remove the four (4) 10mm-headed screws secur-

ing the fuel rails to the intake manifold (2 per side)

Lift the fuel rails (with injectors attached) up and

away from the engine, taking care not to spill fuel

from the feed fitting. Drain the fuel from the rails.

Locate the four (4) OEM aluminum fuel rail spac-

ers lightly pressed into the intake manifold and

pull them free. (See Fig. 9H)

Locate the supplied shorter fuel rail spacers and

insert them into the intake manifold in place of the

OEM spacers.

Note the orientation of the OEM injectors in the

fuel rails. Disengage the retaining clips and

remove the OEM injectors.

Install the supplied high-flow injectors into the fuel

rails in the same orientation as the OEM injectors

and secure in the original fashion with the OEM

retaining clips. (See Fig. 9K)

9. FUEL INJECTOR REPLACEMENT

Fig. 9B: Hose Guide Removal

Fig. 9H: Aluminum Fuel Rail Spacers

Fig. 9K: Fuel Rail / Injector Assembly Detail