What does it mean when a cylinder misfires occasionally but returns to normal after restarting?
1 Answers
The following are the reasons for occasional cylinder misfires that return to normal after restarting: 1. Ignition system: Aging of ignition coils and spark plugs can cause the cylinder's ignition system to fail. When ignition coils malfunction, it most commonly leads to a decrease in power, and in severe cases, can cause the engine to stall suddenly. 2. Cylinder wire wear: To check if the cylinder wires are functioning properly, simply pull out the distributor wire, insert a spark plug, and start the engine to observe. Comparing each cylinder will reveal any issues. 3. Fuel injection system: Clogged fuel injectors or fuel lines can prevent the cylinder from receiving sufficient fuel for combustion, naturally causing the cylinder to malfunction. 4. Excessive spark plug carbon buildup: Long-term poor combustion leads to carbon deposits accumulating at the spark plug ignition point. When these deposits are wetted by fuel, they create a parallel shunt resistance, resulting in spark plug leakage, weak sparks, or even complete spark plug failure.