Thread: Rough idle L99
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Old 06-17-2014, 11:09 AM   #4
strych9
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I read through your other references, and it appears that a loose plug wire on #5 cyl. was the cause, correct? If so, was the plug changed at that time? If not, it could be leaking compression that would cause your plug wire to pop off over time. It's not as uncommon as one might think.
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