It goes up, compresses a violent explosion, and goes down. A piston's job is easy enough to understand, but if you examine what it's required to do, you may be amazed it works at all. Think about ...

Here you can see basic piston terminology, including major and minor thrust locations. Of particular note is the fact that piston pin offset can be used to counteract combustion pressures on the ...

A close look inside the crankcase to inspect the piston, connecting rod, and main bearing. This step reveals wear patterns and helps determine what can be reused, repaired, or replaced.