Vortech Alpha H3 Hummer - 2008 User Manual

Page 11

P/N: 4GN020-015

20OCT08 v2.0 08HummrH3(4GNv1.0)

4. FUEL INJECTOR REPLACEMENT

Relieve the fuel system pressure.

Disconnect the eight fuel injector wiring clips

and retainers from the injectors.

Remove the four 8mm bolts securing the fuel

rails to the intake manifold. Lift up on the rails

evenly, removing all eight injectors. Separate

and set aside the factory injectors as they will

not be re-used.

Using a small amount of clean motor oil,

lightly lubricate the O-rings on both ends of

the supplied fuel injectors.

Install the new fuel injectors into the fuel rails

and secure using the factory retaining clips.

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.

G. Secure the fuel rail assembly using the origi-

nal hardware and attach the wiring clips to

the injector terminals.

NOTE: Caution should be used when working on

the fuel system. Fuel may be under high

pressure. Fuel injector replacement should

be performed in a well ventilated area free

of any possible ignition source. It is recom-

mended that you have a fire extinguisher

nearby.

NOTE: The injector plug connections must

face outwards.