Fuel Tank: Testing and Inspection

PRECAUTIONARY NOTES
- 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 pipes or tubes are not leaking onto the tank. Once removed, make sure fuel is not leaking around fuel sender assembly O-ring.

- This check requires the fuel sender assembly with O-ring to be installed.

FUEL TANK LEAK CHECK
1. Disconnect battery cable.

2. Relieve fuel system pressure. Refer to Fuel System Pressure Relief Procedure in Fuel Delivery and Air Induction/Service and Repair.

3. Drain fuel tank. Refer to Fuel Tank Draining in Service and Repair.

4. Remove fuel tank. Refer to Fuel Tank Replacement in this section.

5. Cap fuel feed tube, fuel return tube and vapor tube on fuel sender assembly.

6. Connect a piece of hose to the filler tube 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. Refer to Removing Fuel Tank Assembly in Service and Repair.