OEM 2008 Ford F-250 Super Duty Fuel Rail

2008 Ford F-250 Super Duty Fuel Rail Parts Questions & Experts Answers

• Q: How to service and repair the fuel rail on 2008 Ford F-250 Super Duty?

  A: Service and repair operations on the fuel rail start by taking off the fuel rail supply tube, fuel injectors and fuel charging wiring harness from the rail followed by unbolted removal of the rail. Apply clean engine oil to a new O-ring seal for the fuel injector before you place the stainless steel combustion gasket and a new O-ring seal on the fuel injector for installation. Tightening the fuel injector properly must be done correctly since incorrect installation leads to engine failures and using air tools during installation may cause the fuel injector hold-down clamp assembly bolt retainer to fall into the oil drain hole. Replacement of the fuel injector hold-down clamp assembly becomes necessary if the retainer gets damaged or if it has gone missing. Application of the fuel injectors requires their combination with the hold-down clamps before tightening each component to 2 Nm (18 lb-in). You should now add the fuel rail component then follow up by threading the bolts using hand strength. A back up wrench should secure the fuel injector fittings during new supply tube installation before the caps of fuel rail and fuel injectors are removed one by one ahead of assembly. The new fuel supply tubes need placement between the fuel rail and fuel injector before hand-starting and seating the fittings which should be tightened following the inside-out method to 2 Nm (18 lb-in). The technician should fasten the fuel rail bolts to 31 Nm (23 lb-ft) and tighten the fuel injector hold-down clamp bolt to 38 Nm (28 lb-ft). Users should first torque the fuel injector supply tube fittings to 12 Nm (106 lb-in) before marking both fuel rail and fuel injector threaded connections with permanent marker ink. The procedure requires turning the supply tube fittings until they reach 60 degrees of final-tightness. The fuel charging wiring harness needs to be reattached to the fuel rail then the fuel injector recorded to the fuel rail pressure (FRP) sensor electrical connectors must be connected before adding the LH or RH valve cover and fuel rail supply tube and performing a high-pressure fuel system bleeding procedure.