Q: I have a 1998 Chevy 2500 van with a 5.7-liter gas engine. It has a clutch fan that sounds loud at times, and I feel it is a waste of horsepower. I want to remove it and install an electric one. The ...

Engine knocking, or detonation, occurs when fuel in the cylinders ignites unevenly, causing metallic pinging sounds, reduced power, and potential engine damage. Key causes include low-octane fuel, ...