Engine knocking, or detonation, occurs when fuel in the cylinders ignites unevenly, causing metallic pinging sounds, reduced ...

What is the knocking sound coming from my engine? What is engine knock? Why is my engine making a knocking noise? Engine knock, or pinging, occurs when a separate pocket of air-fuel mixture ignites ...

THIS is another chapter in the development of a quantitative knock-measuring apparatus. The first part of the paper describes tests in which the knock sound was picked up by a microphone located a few ...

My Subaru Impreza – ‘03 RS model (2.5l) - has begun to make a knocking noise (similar to a diesel engine) during start up in the morning. It slowly fades as the car warms up. The only think I can ...

Occasionally, an engine will develop noises that are difficult to diagnose. A “knocking” sound is the most typical engine noise that is an indication of a mechanical problem that can be fixed if ...

My engine has developed a strange ticking sound. Its whisper-quiet before an oil change, and then makes a loud tapping after a new filter and fresh oil. This cycle has been going on for about 20,000 ...