OEM 2008 Jeep Wrangler Fuel Rail

2008 Jeep Wrangler Fuel Rail Parts and Q&A

• Q: How to Service and Repair a Fuel Rail on a 3.8L Engine on 2008 Jeep Wrangler?

  A: It is necessary to let off the fuel system pressure before working on or repairing the fuel rail for a 3.8L engine, because pressure stays in the system even while the engine is switched off. First, unscrew the filler tube cap from the fuel tank to carry out the Fuel System Pressure Release Procedure. Take off the negative battery cable and remove only the top section of the intake manifold. After that, turn the red slider release away from each fuel injector, depress the tab and take out the electrical connectors from each injector. Each injector has a position tag on its factory wiring harness. If there is no tag, write down the wiring locations before you take out the wiring harness. Pull off the clip on the fuel line latch and remove the line at the fuel rail. Next, remove the four bolts holding the fuel rail in place. Lightly move and tug the left side of the fuel rail until you see the fuel injectors move past the machined holes, then repeat on the right side until all of them have. Finally, take off the fuel rail that has the injectors attached to it from the engine. If you must take out the fuel injectors, use the correct procedure.