High Pressure Fuel Pump Performance Test
HIGH PRESSURE FUEL PUMP PERFORMANCE TESTPOSSIBLE CAUSES
- High pressure fuel pump performance test
Diagnostic Test
1. HIGH PRESSURE FUEL PUMP PERFORMANCE TEST
Monitor rail pressure with scan tool while cranking the engine
Compare the fuel pressure set point with the actual fuel pressure reading.
If the engine is not generating fuel pressure, use the scan tool to check for fuel pressure sensor fault codes.
If no fuel pressure sensor faults are present, verify that the engine has adequate fuel delivery using the fuel lift pump flow test.
Monitor rail pressure with scan tool while cranking the engine.
If the engine is not generating fuel pressure, check the torque on the fuel pump drive gear. Torque - 105 Nm.
Retest to confirm fix.
Test complete
Repair
Test complete.
Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Powertrain Verification Test - Ver 1