214 – An Unacceptably Low Cylinder Compression




Airplane Owner Maintenance - By Dean Showalter show

Summary: 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 […]