Component Tests and General Diagnostics

PROCEDURE
1. Install a tee adapter at the injection pump.

2. Connect a pressure gauge with the dial indication of 0-103 kPa (0 to 15 psi) to the tee adapter.

3. Start the engine and measure the fuel pressure.

- If the fuel pressure is a least 4 psi (27 kPa) continue to step 4.

- If the pressure is less than 4 psi, refer to Diagnostic Tables / System Diagnostic Tables / Fuel Pump Relay Circuit Diagnosis before replacing the lift pump. Testing and Inspection

4. Remove the pressure gauge and the tee adapter.

5. Connect the inlet pipe.

6. Clean any fuel spillage

7. Operate the engine and check for any fuel leaks.