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Old 08-07-2019, 10:49 AM
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upallnight upallnight is offline
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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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