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Old 07-25-2011, 07:46 PM   #1
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Default 5.4 problems

I just got a phone call from the Ford dealer here in wonderful Great Falls, MT where my truck is being repaired... again. He says it has low relative compression on cylinders 4 and 7. I have some ideas but what causes low relative compression?
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Old 07-25-2011, 07:46 PM

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