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  #11  
Old 08-07-2019, 10:49 AM
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Did any of the shops perform the basic of all test, a compression test on all the cylinders to determine if all the cylinders are healthy? A weak cylinder will always show up as a misfire and no amount of throwing parts at it will fix a weak cylinder.

They could perform a relative compression test to determine if a cylinder is bad without having to remove all the spark plugs.
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Old 08-07-2019, 11:55 AM
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I'm unsure of what exact tests were performed as I bought the car after all that had been done under the PO's watch. I pulled the codes on it but didn't spend too much time on it as I just wanted it for parts. It was not a specific cylinder acting up, was more of a surge than a miss. And the surge was not always present either. Would be fine usually when cold started but then present as soon as it started warming up. Sometimes worse than others. Was weird, but again, I was unconcerned. I want to follow this thread as I know the second shop would be interested if a cause is discovered.
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