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remove plug, use a compresion gauge or put your finger over plug hole, crank engine, if your finger feels like it was being sucked in and then blowen out , its fine, bad compression will give you very little suction, or blow out, could be valves are leaking also,

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โˆ™ 2007-10-01 13:49:55
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Q: How do you check if there is a compression problem on a 6.5 hp Briggs and stratton What are the symptoms of bad compression?
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