Navigator 4WD V8-5.4L (2010)
13. NOTICE: Use O-ring seals that are made of special fuel-resistant material. Use of ordinary O-rings can cause the fuel system to leak.
NOTE: Lubricate the new O-ring seals with clean engine oil prior to installation.
Remove the fuel injector-to-fuel rail locks and separate the 8 fuel injectors from the fuel rail.
-
Discard the upper and lower fuel injector O-ring seals.
14. To install, reverse the removal procedure.