Glossary of Auto Terms

DriverSide's Car Dictionary has the most comprehensive definitions of automotive terms. This auto glossary can help you decipher what your mechanic is fixing and what the purpose or function of the particular auto part or accessory is for. We have taken the mystery out of automotive service jargon, so that you don't have to.

Back

Piston Slap

A slapping noise in the engine caused by piston wear. This sometimes happens when engines are cold, and can go away when the engine warms, the metal expands, and tolerances between parts change.



See Also:
Rings
Front-Wheel Drive
Compression
Gear Ratio
Supercharger
Timing Light
Fan
Push Rods

Diagnose Your Car's Problem

Engine won't start? Weird sound? Strange smoke? Got something going on with your car but not sure what it is? The easy to use DriverSide Diagnostic Tool is here to help you figure it out.



Enter Zip: