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Lucas (oil additive) it and pray..if its a rod just drive it easy..if it is spark knock use better gas. answer the door sorry bout that, but if engine is knocking is it at idle, under load,etc knocking can be caused by piston slap,(worn out rings),bad bearings,or simply have engine tuned, all depends where knock is coming from
Wiki User
∙ 16y ago
Wiki User
∙ 12y agoI'm not a car buff, but i think it has something to do with the pistons, not a good thing...
Above correct-preignition for some reason. Fouled plugs, insufficient octane in fuel or timing is off.
Or it could be your oil pump as well.....hope this helps
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What does it mean when someone says a car is idle?
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Why is your car knocking when you drive - could there be a problem with the suspension?
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Knocking in the bottom of the engine?
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DOES IT HOLD GOOD OIL PRESSURE WHILE HOT AND IDLING? SOUNDS LIKE MAIN BEARINGS.
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In order to tell you that you would have to describe the noise and what the car is doing when the noise is made. Are you idling, driving, just turned the AC on? What is occurring and what is the noise? Idling and sounds worse when AC is on. Sounds like it is coming from the top of the engine. Vehicle has 120k miles
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