

Dieseling is a condition where the engine continues to run when the ignition key is turned off. The fuel can ignite without out a spark, causing dieseling.
Engine knock, also called knocking or pinging, is the sound from early ignition in the combustion chamber. The fuel/air mixture ignites on the piston's compression stroke too early, and the resulting
Vapor lock is the formation of bubbles in the fuel lines when fuel boils due to extreme heat. It prevents fuel from reaching the engine.