Fuel Tank: Testing and Inspection

IMPORTANT
- Before attempting "Fuel Tank Leak Check" place a dry chemical (Class B) fire extinguisher near work area.
- Before removing the fuel tank for a suspected leak, make sure fuel lines are not leaking onto the tank. Once removed, make sure fuel is not leaking around fuel sender assembly O-ring.
- This check requires a fuel sender assembly and O-ring to be installed in the fuel tank.

FUEL TANK LEAK CHECK
1. Disconnect negative battery cable.
2. Relieve fuel system pressure. Refer to Fuel Delivery / Service and Repair.
3. Drain fuel tank.
4. Remove fuel tank.
5. Cap fuel feed pipe, fuel return pipe and EVAP pipe on fuel sender assembly.
6. Connect a piece of hose to the filler pipe nipple and plug opposite end.
7. Submerge tank in water or apply soap solution to outside of tank.
8. Apply 35 kPa (5 psi) air pressure to the vent hose on the fuel tank.

- Air bubbles appearing from fuel tank indicate a leak. Replace fuel tank if it is leaking.