Test Description

3: This step tests for location of fuel leakage in the fuel lines.
4: This step tests for fuel leaks below the fuel level in the fuel tank.
5: This step tests for a location of fuel vapors escaping above the fuel level in the fuel tank.

Fuel Tank Leak Test

Step	Action	Yes	No
1	Did you perform the Diagnostic System Check-Engine Controls?	Go to Step 2	Go to Diagnostic System Check - Engine Controls
2	CAUTION: Refer to Gasoline/Gasoline Vapors Caution in Cautions and Notices. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. Inspect the fuel tanks and the fuel pipes for damage or external leaks. Did you find fuel leaking from the fuel tank?	Go to Step 7	Go to Step 3
3	Turn ON the ignition, with the engine OFF. Command the fuel pump ON with a scan tool. Inspect for fuel leaking from the fuel pipe. Did you locate a fuel leak from the fuel pipes?	Go to Step 8	Go to Step 4
4	Install the GE-41415-50 Fuel Tank Cap Adapter. Connect the J 41413-200 Evaporative Emissions System Tester to the GE-41415-50 . Command the EVAP vent valve ON with a scan tool. Pressurize the fuel tank with the J 41413-200 . Inspect for a fuel leak from the fuel tank. Did you locate a fuel leak from the fuel tank?	Go to Step 7	Go to Step 5
5	Turn the Nitrogen/Smoke valve on the J 41413-200 control panel to SMOKE. Use the remote switch to introduce smoke into the sealed system. Inspect the entire system with the with the J 41413-SPT High Intensity White Light for exiting smoke. Did you locate a leak source?	Go to Step 6	Go to Diagnostic Aids
6	Repair the system as necessary. Did you complete the repair?	System OK	-
7	Replace the fuel tank. Refer to Fuel Tank Replacement . Did you complete the repair?	System OK	-
8	Replace the leaking fuel pipe. Refer to FUEL HOSE/PIPES ASSEMBLY REPLACEMENT and EVAPORATIVE EMISSION (EVAP) SYSTEM HOSES/PIPES REPLACEMENT . Did you complete the replacement?	System OK	-