问:<缸3

我在上周检查引擎灯开始。我把代码:P303——失败缸3。这辆车有不到150000英里。火花塞是100000点附近所取代。阀盖垫片泄漏附近缸4。固定在保修期内。约20000英里后,同样的垫片泄漏,所以它又有更换在保修期内。现在再次泄漏。我试过以下修复物:交换缸2和3之间的线圈。我重置密码,但是还有一个新的P303阅读。 I tried swapping the spark plugs, and got the same code. I tried replacing my spark plugs with ones from a different manufacturer. Later, I swapped out my fuel injector, but STILL got the same code. I used grounded plugs with the coils on 2 and 3 last night with a friend, and the sparks look identical and clear. I tried driving 20 miles, and while the plugs were still warm, I did a compression test. (175, 165, 120, 180). Could my cylinder 4 coil be soaked from an oil leak, and would that cause a misfire? I never checked cylinder 4, and I'm currently driving a different car. Do I need to check out the 4th coil and maybe try swapping it out? Or might something else be going on?