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An engine with a knocking noise is almost always a serious condition but not always. When you say knock, if you are referring to what some would call a ping, then that is not so serious and can be caused by simply using the wrong octane fuel. If your engine requires premium fuel then use only premium fuel. If it requires regular then don't waste your money on premium as it will provide no benefit. The condition is more commonly called pre-detonation. It can also be caused by carbon deposit buildup inside the cylinders. Using the wrong spark plugs can cause carbon buildup and pinging or knocking. Dirty fuel injectors, a bad knock sensor and an engine running too hot will also cause a knock. But the most serious reason for a knock is worn crankshaft or piston bearings. The only fix for this is an engine overhaul. Have your engine diagnosed by a professional to see what is causing the knock. You may only need to have the carbon deposits removed to solve the problem.
What else can I help you with?
What would cause a knocking noise when you use your brakes in the car?
Typically, a knocking noise when to use your brakes in the car is caused by your brakes wearing down. This means you need to get them checked out and repaired.
When you break your car makes a knocking noise?
warped rotors , brake
What causes a knocking sound in your car?
many many things, Loose lug nuts which lets wheel make knocking noise. Engine will make a knocking noise if it is really low on oil. Some timing belts make a knocking, slapping noise just before they break.These are just a few examples . Have someone ride in car with you as you duplcate the noise and see if they can determine which part of the vehicle it is coming from.
What is causeing a grinding and knocking noise when driving my car?
Its hard to say... do u know where the noise is coming from?
What causes a knocking noise under the hood of your car?
it could be your valves or your engine
What would cause a loud knocking noise in the front of the car when you accelerate?
you may have a rod knocking and you need to take it to a shop asap
Car makes loud knocking sound at high speeds?
A loud knocking noise in the motor of a car at high speeds is most likely the engine. There could be another issue with the transmission if the knocking only happens at high speeds.
Why would your car make a knocking noise when turning?
your cv boot has torn and needs replacement
How do you fix a knocking noise coming from engine?
Cant you just ask the people at the car place?
What causes a loud knocking noise in front driver side of a 2001 Mazda?
It's the spirit of the car knocking on the side saying "HELLO??? TAKE ME TO A MECHANIC!"
Will your car run bad and make loud knocking noise if there is water in gas tank?
Yes Yes
If car is making a knocking noise?
possibly distributor. tow to mechanic . if you drive , you could damage your engine.
