knock sensor is going bad or is bad
The knocking noise is commonly called spark knock. The knock can be called by the engine timing not being set correctly, or using gas that has too low of an octane for the engine.
A knocking noise can occur from worn engine mounts. When the rubber insert on the engine mounts are old and brittle the chassis is not protected from the weight of the engine. Creating loud vibrations that get louder as the vehicle goes faster.
Most likely needs a tuneup done. Check the timing and change the normal tuneup part.
If it's knocking when accelerating, the engine could be starving for the correct octane fuel ... try the mid-grade or premium fuel and see if it still occurs. Could also be that the timing belt needs to be adjusted/replaced. If the knocking sounds like metal on metal, chances are you are in for a bigger bill for a possible engine rebuild. At any rate, have it checked out by a mechanic soon.
knocking noise
a "knocking" noise could be your lifters. and the ticking when accelerating and letting out of the gas is the same thing. check your oil and if it's full then you may need to think about either having them adjusted, or getting new ones. depending on what you have depends on whether or not you wanna sell it
engine knocking hard,and shaking a bit
Engine knock can be caused by several things. Carbon deposits in the engine can effectively raise the compression ratio of the cylinder. When accelerating, the cylinder gets filled with more fuel and air, and the higher compression ratio causes knocking. Other possible culprits could include spark plugs being too hot or your timing being off.
NO. A knocking noise in the engine is a problem in the engine.
Quite a variety of possibilities. Maybe a loose heat sheild, or a serious engine problem. Post what you find after you visit a local independent repair shop.
== Bad bearings?Loose wrist pin?Only happens under extreme engine load? == PredetonationRunning hot?Timing too far advanced?Fuel octane rating too low?
Engine knocking can be caused by numerous things. Having the incorrect spark plugs, carbon deposits on the cylinder walls, and being low on engine oil may all cause a knocking sound.