Cylinder Compression Test
WARNING: This page is about a different variant/trim than selected.
For a detailed description of the cylinder compression test, refer to the relevant service information. Refer to: CYLINDER COMPRESSION TEST - INGENIUM I6 3.0L DIESEL
| SYMPTOM |
POSSIBLE CAUSES |
ACTION |
| The compression test results are 0% or no pressure |
- During a compression test, the results were 0% or no pressure. This is due to a mechanical fault (broken spring) in the CVVL
unit. The inlet valve is not opening to allow the air into the cylinder, which causes an invalid test result
|
- Disconnect the fuel injector wiring harness's electrical connector(s). Remove the CVVL
unit and inspect the components for a mechanical failure (broken springs). Replace any damaged components
- Make sure the crankshaft position sensor is connected correctly
- Make sure the CVVL
unit it replaced correctly
- Make sure the fuel injectors wiring harness is reconnected. Test the vehicle and see if the fault is still present
- If the fault is still present, conduct a valid compression test after the CVVL
unit is rectified
|