K Tahoe 4WD V8-4.8L VIN V (2000)
Fuel Supply Line: Description and Operation
Nylon Fuel Pipes
CAUTION: Refer to Fuel and EVAP pipe Installation Caution in Cautions and Notices.
Nylon fuel pipes are designed to perform the same job as the steel or flexible fuel pipes or hoses that they replace. Nylon pipes are constructed to
withstand maximum fuel system pressure, exposure to fuel additives, and changes in temperature. There are 3 sizes of nylon pipes used: 3/8 in. ID for the
fuel feed, 5/16 in. ID for the fuel return, and 1/2 in. ID for the vent. Heat resistant rubber hose or corrugated plastic conduit protect the sections of the
pipes that are exposed to chafing, high temperature, or vibration.
Nylon fuel pipes are somewhat flexible and can be formed around gradual turns under the vehicle. However, if nylon fuel pipes are forced into sharp
bends, the pipes kink and restrict the fuel flow. Also, once exposed to fuel, nylon pipes may become stiffer and are more likely to kink if bent too far.
Take special care when working on a vehicle with nylon fuel pipes.
