cylinder misfire

2006 HUMMER H3
60,700 MILES
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Idles rough, has code misfire on cylinder 5. what does that mean ?
Apr 1, 2013 at 7:45 PM
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KASEKENNY
  • ✓ASE Certified Mechanic
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This means cylinder 5 is not firing properly. The crankshaft position sensor expects to see an acceleration on the crankshaft after it fires each spark plug. When it doesn't see this then it sets the code.

This could be due to no spark, fuel, or compression on that cylinder. Here is a guide that will help with this:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

I attached the testing that we need to go through to determine what is causing the issue. Let me know what questions you have. Thanks
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Dec 4, 2020 at 1:16 PM
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