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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
Vibration under load like your describing is probably one cylinder putting out less power than the rest. Do a compression and leak down test.
Compression check is quicker and easier and doesn't require an air compressor and leak down tester.
Old 05-26-2014, 10:16 PM
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