What Causes Cylinder Misfire in a Three-Cylinder Engine?

1 Answers
NadiaMarie
07/30/25 3:08am
There are mainly two reasons: 1. Damage to external components: Primarily caused by components around the combustion chamber such as valves, valve seat rings, valve guides, spark plugs, etc. 2. Misfire due to failure to ignite or delayed ignition of the air-fuel mixture in the cylinder: For the first scenario, typically check the spark plug, clean carbon deposits from the intake and exhaust valves, and inspect the turbocharger for any issues, such as wear or burn damage to the turbocharger impeller. For the second scenario, it is usually caused by an abnormality in a certain component or part, leading to unstable ECU regulation of the engine, failing to meet the theoretical values calibrated by the ECU, resulting in misfire.
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