Is the Misfire in Cylinder 4 a Serious Problem?
2 Answers
Misfire in cylinder 4 is a serious issue. Here is the relevant information: 1. Cylinder pressure: The misfire in cylinder 4 is caused by internal wear or damage, resulting in insufficient cylinder pressure. Possible causes include faulty ignition coils or spark plugs, issues with the fuel injector wiring or clogged injectors, or the possibility of the fourth cylinder injector failing and cutting off fuel supply. Other factors may include fuel pressure, fuel lines, or fuel quality. It is recommended to conduct a repair as soon as possible. 2. Electronic faults: The engine control unit (ECU) may be damaged or generate fault codes. The solution is to check the cylinder pressure of each cylinder. Generally, the cylinder pressure for most vehicles is around 1300 kPa. Address any cylinders with abnormal pressure.
As an experienced car enthusiast, I know this all too well! A misfire in cylinder four is no small matter—it's like a sudden heart attack for your car. The vehicle will shake violently as if it's sifting flour, struggle to accelerate and climb hills, and emit exhaust fumes that reek. The scariest part is gasoline flooding into the exhaust pipe, which can eventually destroy the catalytic converter if left unchecked. Replacing one can cost upwards of 7,000 to 8,000 yuan. My neighbor learned this the hard way last year—they hesitated to fix it initially, only to end up spending a fortune when the engine seized. I strongly advise you to get it checked ASAP. It's likely a faulty ignition coil or spark plug, and replacing them only costs a few hundred bucks. Don't let a small issue snowball into a major expense.
