What are the reasons for frequent misfires in one cylinder?
2 Answers
The reasons for frequent misfires in one cylinder include the following: 1. Ignition failure, requiring inspection of the ignition coil and high-voltage wires; 2. Cylinder pressure and timing system failure; 3. Crankshaft position sensor failure; 4. Fuel injection failure, due to poor car wiring or fuel injection pressure; 5. Human operational errors, such as mistakes during maintenance; 6. Wear and aging, due to untimely maintenance; 7. Engine misfire. Routine checks for car misfires include: spark plugs, fuel filter, air filter, fuel system including fuel pressure and injection pulse width, ignition coil and wiring, intake system for leaks, air flow meter, exhaust system for blockages, and catalytic converter.
Encountering this issue is quite troublesome. My car also had a cylinder misfiring frequently before, and there are quite a few common causes. For instance, spark plugs can accumulate carbon deposits or wear out, which over time can lead to dirt buildup affecting ignition efficiency; aging or damaged ignition coils can cause unstable spark generation, especially noticeable on rainy days; clogged fuel injectors result in uneven fuel supply, particularly when using low-quality gasoline; insufficient cylinder compression due to poor valve sealing or worn piston rings failing to maintain cylinder pressure; or sensor failures like a faulty crankshaft position sensor misguiding ignition timing. Ignoring these issues can cause severe engine vibrations, a noticeable lack of power during high-speed driving, a rapid increase in fuel consumption, and potential damage to the catalytic converter, leading to higher repair costs. I recommend first reading the fault codes to pinpoint the problem and regularly replacing spark plugs and air filters as preventive measures.
