Fuel Feed Hose/Pipe
The fuel feed pipe carries fuel from the fuel tank to the fuel rail assembly. The fuel pipes consist of 2 sections:
- The rear fuel pipe assembly connects from the top of the fuel tank module to the chassis fuel pipe. The rear fuel pipe is constructed of nylon.
- The chassis fuel hose/pipe is located under the vehicle and connects the rear fuel hose/pipe to the fuel inlet pipe at the high pressure fuel pump. The chassis fuel hose/pipe is constructed of steel and braided Teleflex® hose.
The flexible portion of the chassis fuel hose/pipe contains a check flow valve. The check valve prevents the normal reverse pressure pulsations, created by the fuel rail pressure (FRP) regulator, from damaging the in-tank fuel pump over time.
CAUTION:
Refer to Fuel and Evaporative Emission Hose/Pipe Connection Cleaning Caution
.
NOTE:
Precautions must be taken to prevent any form of contamination, that may cause the check valve to stick open, when servicing the fuel system. Particles in the fuel system larger than 75 microns may cause a condition.