Fuel Return Line: Description and Operation

FUEL FEED AND RETURN PIPES

The fuel feed pipe carries fuel from the fuel tank to the fuel rail assembly. The fuel return pipe carries fuel from the fuel filter back to the fuel tank. The fuel pipes consist of 2 sections:
- The rear fuel pipes are connected to the fuel sender assembly at the top of the fuel tank and deliver fuel to the fuel filter, which is mounted to the chassis. The rear fuel pipes are constructed of nylon.
- The chassis fuel pipe is located under the vehicle and delivers fuel from the fuel filter to the fuel rail. The chassis fuel pipe is constructed of steel.