If your BMW’s engine is making strange noises, head straight to MMS Automotive. We are staffed with BMW experts that can inspect the engine thoroughly and determine the cause of the strange sound. If the sound is severe, it may be better to have your BMW towed to our shop to avoid further engine damage. Let’s talk about the different noises an engine can make and their causes below.
Grinding
One instance where it’s better to have the BMW towed is if the engine is grinding. This noise suggests that you do not have any oil circulating through the engine. The grinding that you hear is engine parts grinding against each other. This can damage them beyond repair.
Hissing
A hissing noise generally means the BMW is leaking automotive fluid onto hot engine parts. You may also hear sizzling if this is the case. If your BMW is having problems producing power, it’s possible that the hissing noise is coming from a leaking vacuum hose and the engine is filling with air.
Knocking
The BMW’s engine will knock if there is a problem with the fuel or detonation. Specifically, your BMW likely needs high-octane fuel in order to prevent detonation problems. If you have a clogged fuel filter or clogged injectors, the fuel mixture may be too lean. Worn spark plugs can also make the engine knock.
Popping
Popping sounds generally come from the exhaust system rather than the engine. Specifically, your BMW may pop or tap if the exhaust manifold is leaking. The leak can come from the manifold itself or the manifold gasket. The muffler may also pop if it has a hole in it.
Rumbling
Aside from popping, the muffler can also make the engine rumble and roar if it needs to be replaced. Another thing that will make the engine rumble and roar is a missing catalytic converter. It might seem hard to believe, but people steal catalytic converters because they are made from precious metals.
Squealing
Finally, if your BMWs engine is squealing, the accessory belt may need to be tightened. This can also be an indication that the belt’s tensioner has worn out and needs to be replaced. You may also hear a squealing noise coming from the engine if the power steering pump is going bad.
Don’t worry. MMS Automotive in South Bay, CA, is here to help. Call us today to schedule a convenient appointment for your BMW so we can determine why the engine is making strange noises.
