Fuel Pressure Pulsation Damper: Testing and Inspection
PROCEDURE1. Check that battery voltage is above 12 volts.
2. Disconnect the negative (-) terminal cable from the battery.
CAUTION: Work must be started after 90 seconds from the time the ignition switch is turned to the LOCK position and the negative (-) terminal cable is disconnected from the battery.
3. Remove the union bolt and 2 gaskets. and disconnect the fuel inlet hose from the fuel filter outlet.
CAUTION: Put a shop towel under the fuel filter and slowly loosen the union bolt.
4. Install the fuel inlet hose and pressure gauge to the fuel filter outlet with 3 new gaskets and the union bolt (SST 09268-45012).
Torque: 29 Nm (22 ft lb)
5. Wipe off any splattered gasoline.
6. Using jumper connect terminals +B and FP of the Data Link Connector (DLC) 1 (SST 09843-18020).
7. Reconnect the negative (-) terminal cable to the battery.
8. Turn the ignition switch ON. Do not start the engine. The fuel pump should operate and cause the pressure gauge to deflect.
9. Listen at the fuel rail for excessive fuel pump noise and watch the fuel pressure gauge for needle fluctuations, indicating pulsations in the fuel flow.
10. If a problem is found, replace the Fuel Pressure Pulsation Damper.