Airplane Owner Maintenance - By Dean Showalter

214 – An Unacceptably Low Cylinder Compression

02.17.2023 - By Dean ShowalterPlay

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This is a good looking exhaust valve with a nice concentric appearance. However, the compression was very low at 8/80. I lapped the valve, hoping it would improve the compression test result… it only came up to 10/80, and that was after running the engine again and getting it nice and hot. Although the valve […]

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