Posts Tagged: how to test engine compression

How to Perform a Compression Test on Your Engine

Compression Test Guide: Diagnose Worn Rings and Bad Valves Quick Summary A compression test tells you the internal health of your engine by measuring how well the piston rings and valves seal. To get accurate results, .you’ll need to perform the test twice, once dry to test valve sealing and another time wet to test ring condition. The numbers matter, but what matters more is the cylinder-to-cylinder consistency. Large differences between cylinders point to internal mechanical problems like worn piston rings, leaking valves, or a blown head gasket. Article Why … Read More