Have vehicle scanned to determine the problem
Check the engine timing first. Pinging or knocking,especially under acceleration could be early detenation caused by advanced timing.
NO. A knocking noise in the engine is a problem in the engine.
check heater blower motor blower wheel could be broken off The knocking comes from an Acctuator that has stripped out in the Hvac case. You Have to replace the acctuator to solve the problem.
A knocking noise in the front wheels can be a very serious problem. The knocking noise could be caused by bad ball joints. Bad ball joints can slip off the tie rods and cause the wheel assembly to collapse. This problem should be looked at as soon as possible.
Bad bearing? Bad connecting rod?
There could be a problem with low old causes the pistons to rattle. There could also be a problem with the rocker arm.
owners manual say it could be normal,but carbon on pistons from my experience also cause knocking,when I remove carbon knocking stops,I have corolla with 1nze engine.
The knocking noise on a 2002 Isuzu Rodeo could be bad connecting rods. Listen to the knocking, if it get progressively worst at high speeds than the rods may be bad. To be sure check the oil pan for any shards of steel.
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.
check oil level. go to engine shop.
Macbeth wishes the knocking at the gate could wake Duncan from his sleep after he murders him, so he could continue to act innocent.
My 2000 Grand Prix would have a low-speed knocking noise coming from the drivers side as the CV axle was failing. The loss of lubrication in the CV Boots allows the joint to make a knocking/tapping sound at a low speed. If the knocking is coming from the engine compartment, then it could be an entirely different problem.