White smoke. Means water/coolant in your engine.
Most likely you blew the head gasket, if you smell oil and see white smoke.
your foot
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.
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.
Cant you just ask the people at the car place?
if it sounds like the knocking is coming from the bottom of the engine i would bet it was the rods or rod bearings may be worn. if the knocking is on the top ,then i would have the lifters and or the rocker arms checked.
Noise coming from engine in Oldsmobile Cutlass could be as a result of an oil leak in the rear of your engine. This makes the gears to wear off leading to severe knocking noise.
If you have knocking from the engine and smoke from the exhaust then you have far more problems than the car just not starting. Sick professional help immediately.
iv got 2 o5s an 1 makes a knocking noise but the bike is really clean an the other sounds softer an no knock ! Not sure what it is but its driving me nuts!
If its a legitimate knocking then you would want to go with head gasket if its a tapping you would be looking at a valve
knocking noise
ok where is the knocking coming from, brakes, engine ? only happens during acceleration ? if it is truly an engine knock, check oil immediately, but maybe to late, again need more info.
Internal knocking inside the engine is almost always a sign of worn bearings. Crankshsft, or rod bearing would be my guess. The fix, if it is internal, is overhaul. Before opening it up, make sure the knocking is indeed coming from inside the engine.