A: To service the fuel rail, release fuel pressure and disconnect the battery. Remove wiring harness retainers and disconnect fuel injector connectors. Remove and replace fuel rail supply tube bolts and O-ring seals. Repeat on the left side, then reinstall, lubricating new O-ring seals with clean engine oil.
Q: How to Maintain the Fuel Rail on a Ford Ranger?
A: In order to service the fuel rail, de-connecting battery ground, releasing the fuel pressure and de-connecting the fuel injector connectors and harness. Take out the tube of the fuel supply and the bolts holding the assembly. Take off the old O-ring seals, install new fuel-resistant seals, lubricate them and then undo the process in order to install.