Cylinder 4 Misfire Detected
Check if the misfire occurs at idle or at high loads Idle at misfire: If the misfire occurs due to lack of spark, check the ignition coil, connectors and wiring If the misfire occurs due with spark: - Carry out a compression check on the cylinder head ( see workshop manual, 01-01 Cylinder head ) Idle at higher loads: If the misfire only occurs att higher loads, check the spark plug and high tension cables. If the misfire occurs in different cylinders with different loads, clean the fuel injectors ( see Ti 03-13 01 25, Cleaning of injectors for gas engines ) After the fault has been fixed, drive the engine under load without misfires so that the fault becomes passive and can be erased
What you'll see
No driver-visible symptom recorded.
System reaction
Limphome mode is activated Restart the engine to be able to get full torque again
Diagnostic depth
Cylinder4 does not contribute with torque from combustion
- Lack of spark from the spark plug - Lean gas / air mixture that makes combustion difficult