| Engine cranks, but does not fire |
- Engine breather system disconnected/restricted
- Ignition system
- Fuel system
- Electronic engine control
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- Ensure the engine breather system is free from restriction and is correctly installed
- Check for ignition system, fuel system and electronic engine control DTCs and refer to the relevant DTC Index
|
| Engine cranks and fires, but will not start |
- Evaporative emissions purge valve
- Fuel pump
- Spark plugs
- HT short to ground (tracking) check rubber boots for cracks/damage
- Ignition system
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- Check for evaporative emissions, fuel system and ignition system related DTCs and refer to the relevant DTC Index
|
| Difficult cold start |
- Engine coolant level/anti-freeze content
- Battery
- Electronic engine controls
- Exhaust Gas Recirculation (EGR) valve stuck open
- Fuel pump
- Purge valve
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- Check the engine coolant level and condition
- Ensure the battery is in a fully charged and serviceable condition
- Check for electronic engine controls, engine emissions, fuel system and evaporative emissions system related DTCs and refer to the relevant DTC Index
|
| Difficult hot start |
- Injector leak
- Electronic engine control
- Purge valve
- Fuel pump
- Ignition system
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- Check for injector leak, install new injector as required
- Check for electronic engine controls, evaporative emissions, fuel system, ignition system and engine emission system related DTCs and refer to the relevant DTC Index
|
| Difficult to start after hot soak (vehicle standing, engine off, after engine has reached operating temperature) |
- Injector leak
- Electronic engine control
- Purge valve
- Fuel pump
- Ignition system
|
- Check for injector leak, install new injector as required
- Check for electronic engine controls, evaporative emissions, fuel system, ignition system and engine emission system related DTCs and refer to the relevant DTC Index
|
| Engine stalls soon after start |
- Breather system disconnected/restricted
- ECM relay
- Electronic engine control
- Ignition system
- Air intake system restricted
- Air leakage
- Fuel lines
|
- Ensure the engine breather system is free from restriction and is correctly installed
- Check for electronic engine control, ignition system and fuel system related DTCs and refer to the relevant DTC Index
- Check for blockage in air filter element and air intake system
- Check for air leakage in air intake system
|
| Engine hesitates/poor acceleration |
- Fuel pressure, fuel pump, fuel lines
- Injector leak
- Air leakage
- Electronic engine control
- Throttle motor
- Restricted accelerator pedal travel (carpet, etc)
- Ignition system
- Transmission malfunction
|
- Check for fuel system related DTCs and refer to the relevant DTC Index
- Check for injector leak, install new injector as required
- Check for air leakage in air intake system
- Ensure accelerator pedal is free from restriction
- Check for electronic engine controls, ignition, engine emission system and transmission related DTCs and refer to the relevant DTC Index
|
| Engine backfires |
- Fuel pump/lines
- Air leakage
- Electronic engine controls
- Ignition system
- Sticking variable camshaft timing (VCT) hub
|
- Check for fuel system failures
- Check for air leakage in intake air system
- Check for electronic engine controls, ignition system and VCT system related DTCs and refer to the relevant DTC Index
|
| Engine surges |
- Fuel pump/lines
- Electronic engine controls
- Throttle motor
- Ignition system
|
- Check for fuel system failures
- Check for electronic engine controls, throttle system and ignition system related DTCs and refer to the relevant DTC Index
|
| Engine detonates/knocks |
- Fuel pump/lines
- Air leakage
- Electronic engine controls
- Sticking VCT hub
|
- Check for fuel system failures
- Check for air leakage in intake air system
- Check for electronic engine controls and VCT system related DTCs and refer to the relevant DTC Index
|
| No throttle response |
- Electronic engine controls
- Throttle motor
|
- Check for electronic engine controls and throttle system related DTCs and refer to the relevant DTC Index
|
| Poor throttle response |
- Breather system disconnected/restricted
- Electronic engine controls
- Transmission malfunction
- Traction control event
- Air leakage
|
- Ensure the engine breather system is free from restriction and is correctly installed
- Check for electronic engine controls, transmission and traction control related DTCs and refer to the related DTC Index
- Check for air leakage in intake air system
|
| Fuel gauge reading empty with fuel in the fuel tank |
- Active fuel level sensor circuit open circuit
- Passive fuel level sensor circuit open circuit
- Instrument cluster internal failure
|
- Using the manufacturer approved diagnostic system, perform the guided diagnostic routine - Fuel Level Sensor Test
|
| Fuel gauge not reading empty with no fuel in the fuel tank |
- Jet pump fault
- Fuel crossover tube blocked or leaking
|
- Using the manufacturer approved diagnostic system, check datalogger signals - Fuel Sender 1 (0x61B7) - Fuel Sender 2 (0x61B8). Refer to the table below. If the right sensor reads empty when the left sensor reads more than empty, check that the jet pump is transferring fuel from the left side to the right side
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