Lucerne V6-3.8L (2007)
Evaporative Emissions Hose: Service and Repair
Evaporative Emission (EVAP) Hoses/Pipes Replacement - Engine/Chassis
Evaporative Emission Hoses/Pipes Replacement - Engine/Chassis
Removal Procedure
Caution: In order to reduce the risk of fire and personal injury observe the following items:
* Replace all nylon fuel pipes that are nicked, scratched or damaged during installation, do not attempt to repair the sections of the nylon
fuel pipes
* Do not hammer directly on the fuel harness body clips when installing new fuel pipes. Damage to the nylon pipes may result in a fuel leak.
* Always cover nylon vapor pipes with a wet towel before using a torch near them. Also, never expose the vehicle to temperatures higher
than 115°C (239°F) for more than one hour, or more than 90°C (194°F) for any extended period.
* Apply a few drops of clean engine oil to the male pipe ends before connecting fuel pipe fittings. This will ensure proper reconnection and
prevent a possible fuel leak. (During normal operation, the O-rings located in the female connector will swell and may prevent proper
reconnection if not lubricated.)
1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief. See: Fuel Delivery and Air Induction/Fuel Filter/Fuel Pressure Release/Service
and Repair/Fuel Pressure Relief
2. Clean the fuel and evaporative emission (EVAP) pipe connections and areas surrounding the connections prior to disconnecting the connections in
order to avoid possible contamination of the fuel and/or EVAP system.
3. Disconnect the fuel feed pipe (1) quick connect fitting at the fuel rail.
4. Disconnect the EVAP line (2) quick connect fitting at the EVAP canister purge valve.
5. Raise and support the vehicle. Refer to Vehicle Lifting.
