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Why is my car engine making a knocking noise?

Hi everyone, I’ve noticed a knocking noise coming from my car’s engine. Does anyone know why this might be happening? Thanks in advance!

Hey there! A knocking noise usually means there’s an issue with the combustion process in your engine. It could be caused by using low-octane fuel, worn-out spark plugs, or carbon deposits on your valves. Sometimes, it’s also a sign of a more serious problem like a bad rod bearing. You should get it checked out as soon as possible.

I had the same problem with my car a few months ago. In my case, it turned out to be a problem with the ignition timing. If the timing is off, it can cause that knocking sound. Also, make sure your fuel injectors are clean and functioning properly. Best to have a mechanic look at it to be sure.

Hi! Knocking noises can be caused by several things. They could be as simple as poor-quality fuel or more complex issues like a worn-out engine bearing or a problem with the timing belt. Checking your engine’s oil level and quality might also give you some clues. Definitely don’t ignore it, as it could lead to more damage.


About Dan Hoffman

Dan is a co-founder of Engineswork. He knows everything about internal combustion engines. Ask your questions in comments down below this article - he will be glad to help you anytime.

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