RAM 2500 Van V8-5.9L VIN Z (1997)
NOTE: To perform this test you will need to remove the engine cover.
1. Release fuel pressure.
-
Refer to the Fuel System Pressure Release Procedure without Pressure Test Port.
2. Disconnect latch clip and fuel line at fuel rail.
-
Refer to Quick-Connect Fittings for procedures.
3. Connect adapter tool number 6923 into the fuel rail (Fig. 8).
-
Be sure adapter tool is fully seated into fuel rail.
4. Install latch clip to fuel rail.
-
If latch clip can not be fully seated into fuel rail, check for adapter tool not fully seated to fuel rail.
5. Connect vehicle fuel line into adapter tool 6923.
-
Be sure fuel line is fully seated into adapter tool 6923.
6. Remove protective cap at test port "T" on adapter tool number 6923.
7. Connect the 0-414 kPa (0-60 psi) fuel pressure gauge (from gauge set 5069)to the test port "T" (Fig.8).
8. Start engine and note pressure gauge reading.
-
Fuel pressure should be 339 kPa +/- 34 kPa (49.2 psi +/- 5 psi) at idle.
9. If engine runs but pressure is below 44.2 psi, check for a kinked fuel supply line somewhere between fuel rail and fuel pump module.
-
If line is not kinked, replace fuel pump module assembly.
-
Refer to Fuel Pump Module Removal/Installation.
10. If operating pressure is above 54.2 psi, electric fuel pump is OK, but fuel pressure regulator is defective.
-
Replace fuel filter/fuel pressure regulator.
-
Certain filter/regulators may be serviced separately and some require the replacement of the fuel pump module assembly.
-
Refer to Fuel Filter/Fuel Pressure Regulator Removal/Installation for more information.
11. After performing pressure test, install fuel line into fuel rail.
-
Install latch clip into fuel rail.
-
Refer to Quick-Connect Fittings for procedure.