What to Do When One Cylinder Misfires in a Car?

1 Answers
LaAmir
07/30/25 7:12am
Engine misfire refers to the situation where the first cylinder of the engine fails to perform work or has insufficient working capacity. Engine misfire may be caused by issues such as spark plug failure, ignition coil problems, or fuel injector malfunction. First, use a diagnostic tool to enter the cylinder misfire detection interface to check the engine's operating condition, then open the engine hood for inspection. Causes and specific solutions for misfire in cylinder 1 of the engine: 1. Check the spark plug in the ignition system; when the engine is idling, press a wooden handle or the tip of a screwdriver against the cylinder head or the metal casing of the engine itself, and touch the metal part of the screwdriver to each spark plug terminal. If the engine gradually slows down as a result, it indicates that the spark plug is functioning normally. If the engine speed does not change, the spark plug is faulty or the engine itself has ideal compression. Inspect the condition of the spark plug to see if there is oil contamination or carbon buildup in the combustion chamber. 2. The distributor pressure coil has defects; if the spark plug is intact but the engine still exhibits misfire, it may be due to excessive pitting or burning of the contact points. Excessive pitting of the contact points indicates that the distributor has lost its effectiveness.
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