Engine compression is a measure of the stress contained in the combustion chamber of an engine. It is a vital metric for engine efficiency, because it impacts energy output, gasoline effectivity, and emissions. Low compression can result in a lack of energy and gasoline economic system, whereas excessive compression can result in knocking and different engine issues.
Checking compression is a comparatively easy process that may be completed with just a few primary instruments. It entails measuring the stress contained in the combustion chamber of every cylinder. This may be completed with a compression tester, which is a specialised instrument that attaches to the spark plug gap.