Q: The Check Engine Light came on, I hooked it up to my scanner and got the code P0308 (cylinder #8 misfire).

asked byNovember 11, 2016

Engine seems to run fine and I don't notice anything wrong with it when Im driving... do I need to replace my ignition coil or not? What else could be the issue? I don't want to waste money having someone replace my ignition coil if that won't fix my issue. I know my CV boot is cracked so could that be causing the problem?

My car has 121000 miles.
My car has an automatic transmission.

An easy way to isolate if the ignition coil is the problem is to swap the #8 coil with another cylinder. Swap the #8 coil with the coil from the adjacent cylinder, then clear the codes. If the code remains for cylinder #8, then there are other issues such as the spark plug, wiring, or a signal issue from the PCM. Also, an injector with a poor spray pattern can cause the失火以及气缸#8的机械问题,例如阀门或压缩问题。

If the fault code moves with the ignition coil, then odds are you do have a badignition coil。If the coil is at fault, you may want to consider replacing them all at the same time. More commonly than not, when one coil fails, one or more will soon fail as well. Changing them all at the same time alleviates having to go through this 7 more times over the next several months. Otherwise replacing them as they fail is not a problem.

为避免进行任何不必要的维修,请拥有一名经过认证的技术人员,例如您的机械师,万博体育入口diagnose the Check Engine Light亲自帮助您解决问题。

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