Checking the compression on a motorcycle engine is an important part of routine maintenance. It gives you a good indication of the health of the engine and can help you identify potential problems early on. Compression is the measure of how well the piston seals against the cylinder head and valves. A higher compression ratio means that the engine is more efficient and powerful. However, too much compression can cause engine damage.
There are a few different ways to check the compression on a motorcycle engine. The most common method is to use a compression tester. A compression tester is a simple tool that screws into the spark plug hole. Once the tester is in place, you kick over the engine a few times and read the gauge. The gauge will show you the compression in pounds per square inch (psi). Acceptable compression for most motorcycle engines is between 120 and 150 psi. If your engine’s compression is below 120 psi, it may be a sign of worn piston rings, valves, or a head gasket leak.
