>> Welcome to The GotEngines.com Blog

What is Pre-Ignition or engine knock in Internal Combustion engines?

September 25th, 2009
If you hear a knocking sound from your cars engine, mostly under acceleration, this is a symptom of pre-ignition or auto-ignition. What happens is that the fuel-air in the combustion chamber ignites spontaneously resulting in a very rapid reaction of a portion or all of the fuel-air mixture. This fast release of heat results in [...]