RAM 1500 Van V8-5.2L VIN Y (1999)
12. Testing for fuel injector or fuel rail leakage: Clamp off the rubber hose portion of Adaptor Tool between the fuel rail and the test port "T" on
Adapter Tool. If pressure now holds at or above 30 psi, a fuel injector or the fuel rail is leaking.
13. Testing for fuel pump cheek valve, filter/regulator check valve or fuel tube/line leakage:
Clamp off the rubber hose portion of Adaptor Tool between the vehicle fuel line and test port "T" on Adapter Tool. If pressure now holds at or
above 30 psi, a leak may be found at a fuel tube/line. If no leaks are found at fuel tubes or lines, one of the check valves in either the electric fuel
pump or filter/regulator may be leaking.
NOTE: A quick loss of pressure usually indicates a defective check valve in the filter/regulator. A slow loss of pressure usually indicates a defective
check valve in the electric fuel pump.
The electric fuel pump is not serviced separately. Replace the fuel pump module assembly. The filter/ regulator may be replaced separately on certain
applications. Refer to Fuel Filter/Fuel Pressure Regulator Removal/Installation for additional information.
