Fuel Tank: Testing and Inspection

IMPORTANT
- When working on or near the fuel tank, be sure to observe information molded on the bottom of fuel tank.
- Before removing the fuel tank for a suspected leak, make sure fuel pipes are not leaking onto the tank. Once removed, make sure fuel was not leaking around fuel sender assembly O-ring.
- This check requires a fuel sender assembly and an O-ring to be installed in the fuel tank.

1. Disconnect negative battery cable.
2. Relieve fuel system pressure (see "Fuel System Pressure Relief").
3. Remove fuel tank (see "Fuel Tank Replacement").
4. Cap fuel feed pipe and EVAP pipe on fuel sender assembly.
5. Plug EVAP pipe.
6. Connect a piece of hose to the fuel return pipe.
7. Submerge tank in water or apply soap solution to outside of tank.
8. Apply 7 to 10 kPa (1 to 1 1/2 psi) air pressure to the fuel return tube on the fuel sender assembly.
- Air bubbles appearing from fuel tank indicate a leak. Replace fuel tank if it is leaking (see "Fuel Tank Replacement").