Check the oil level. Sometimes being low on oil causes a knocking sound.
i would have to say i bet 9 times out of ten its the harmonic balancer dos the noise get louder when put in reverse.....? if so that's definitley what it is.......new there about 100 bucks but you can most likely find one at the junk yard for cheap 20 bucks..... i would advise to rent a harmonic balancer pulley from the nearest auto zone you will need
im not too sure it has anything to do with the oil, if it was low enough to make the engine make noise, the oil level sensor light would have came on the dash . if it where a motor mount, you would know. every turn you make you would feel the engine shifting, and it would be a lot louder than a knocking sound. although i have the same knocking issue with my 03 Gt, and all i did was tighten the valves. if you are mechanically inclined, you can do this yourself in less than an hour. if not don't try! take it in to any shop and pay 1 hour labour.
Cause low pressure oil pump
When the fuel in an engine cylinder ignites prematurely or unevenly to cause power fluctuations and a "knocking" sound. usually occurs when an engine is very how or improperly timed.
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.
can you elaborate? engine noise? stationary/moving? ticking, tapping or a definite knocking?
Bad bearing or rod
Yes, fouled spark plugs can cause engine shaking, and loss or power. I'm not sure about knocking but I'd guess that too.
Having a bad rod bearing could cause a truck to make a loud knocking noise and shake when driving at high speeds. The engine having a coolant leak or an engine timing problem could also cause the knocking noise.
A bad harmonic balancer can cause a knocking noise. The harmonic balancer doesn't actually produce the noise, but it can cause the noise in the engine.
no installig a starter wrong will not cause engine knocking. all that will do is maybe short fuses, heat up wires, ruin your starter, or melt wires. knocking isn't electrical it is mechanical like lifters, pistons, valves, things like that
A bad rod bearing
Running too lean.
It may be map sensor but engine knocking cause of another reason. You should check your spark plug , I.S.C valve , Injector and engine Compressor. thanks It may be map sensor but engine knocking cause of another reason. You should check your spark plug , I.S.C valve , Injector and engine Compressor. thanks
sounds like you ac compressor is about to crap out.
I believe that an engine can create a noise underneath the middle of the hood....
maybe the carberator i dont know im not a machanic or anything
I would recommend taking it to a mechanic and have them listen to it. Everyone's definition of "knocking" is slightly different. Try not to drive it for too long; engine knocks can usually cause pretty severe damage to an engine.
It could be the cause of the knock only if the gasket was bad and leaked out almost all the oil.
Low oil or low oil pressure, bad oil pump, clogged or gummed up lifters or even thin oil can cause low oil pressure. All the possibilities mentioned can cause the engine to be starved of lubrication. Which in turn creates friction that heats the metal engine part so that their tolerances change. Change in tolerances between two parts can cause knocking with increased heat from this friction.
loose exhaust pipe or muffler is most common
A hole in the muffler would cause a knocking sound in your muffler. A loose exhaust pipe can also cause a knocking noise.
The engine on your 04 5.3L Chevy Tahoe could be knocking until it warmed up because of a bad fuel-air mixture. . The wrong oil could also be a cause.
it might be a bent piton rod if you or water or somthing into the engine