What is the check valve on a Jeep Liberty?
Check Valve Operation: The electric fuel pump outlet contains a one-way check valve to prevent fuel flow back into the tank and to maintain fuel supply line pressure (engine warm) when pump is not oper- ational. It is also used to keep the fuel supply line full of gasoline when pump is not operational.
What to use for fuel gauge on Jeep Liberty?
The DRB III Scan Tool along with the PEP module, the 500 psi pressure transducer, and the transducer-to-test port adapter may also be used in place of the fuel pressure gauge. The fittings on both tools must be in good condition and free from any small leaks before performing the proceeding test.
Where is the fuel tank located on a Jeep Liberty?
OPERATION Fuel is picked up in the fuel tank by the fuel pump module. This module is located on the bottom of the fuel tank. A fuel return system is provided within the fuel pump module using check valves. A separate fuel return line from the engine to the tank is not used. The fuel pressure regulator and the main fuel filter are not combined.
How does the fuel filler work on a Jeep Liberty?
A fuel filler/vent tube assembly using a pressure/ vacuum, 1/4 turn fuel filler cap is used. The fuel filler tube contains a flap door located below the fuel fill cap. A one-way check valve is installed into the tanks fuel fill fitting.
Where is the fuel return module on a Jeep Liberty?
This module is located on the bottom of the fuel tank. A fuel return system is provided within the fuel pump module using check valves. A separate fuel return line from the engine to the tank is not used. The fuel pressure regulator and the main fuel filter are not combined. They are separate items.
What causes a fuel leak in a Jeep Liberty?
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, fuel fil- ter or fuel pressure regulator may be leaking.
Where is the fuel management valve on a Jeep Liberty?
It is located on top of the fuel tank (Fig. 1). OPERATION The flow management valve (Fig. 1) is one of the com- ponents used in the ORVR system. The valve meters the flow of fuel vapors to the EVAP canister during vehicle run and refueling.
A fuel filler/vent tube assembly using a pressure/ vacuum, 1/4 turn fuel filler cap is used. The fuel filler tube contains a flap door located below the fuel fill cap. A one-way check valve is installed into the tanks fuel fill fitting.
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, fuel fil- ter or fuel pressure regulator may be leaking.
Where is the fuel pump relay on a Jeep Liberty?
STANDARD PROCEDURE – FUEL SYSTEM PRESSURE RELEASE Use following procedure if the fuel injector rail is, or is not equipped with a fuel pressure test port. (1) Remove fuel fill cap. (2) Remove fuel pump relay from Power Distribu- tion Center (PDC). For location of relay, refer to label on underside of PDC cover.