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Q: I am losing compression, why?

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I am losing compression, why?

Hi there, thanks for writing in. Dwindling and/or uneven engine cylinder compression is due to valve defects and/or cylinder ring wear. Additional causes are head gasket defects and there is also the possibility that your timing chain has skipped, thus causing the valves to be "open" at the wrong time. All of these possibilities can be checked by a local expert to diagnose the loss of power and advise you on proper repairs.

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