your foot
White smoke. Means water/coolant in your engine. Most likely you blew the head gasket, if you smell oil and see white smoke.
knocking noise
possibly distributor. tow to mechanic . if you drive , you could damage your engine.
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.
If it is deep in the engine, the engine may need repaired/replaced.
Depends on the sound of the knock. Could be main bearings or rod bearings.
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.
engine knocking hard,and shaking a bit
no
It may need oil? Or motor needs rebuilt.
if its a low knocking noise it is normal on the 3.1 engine!! if it is loud check to make sure the valves are getting oil!! I have a 2000 Malibu v6 and it is the same way.
Typically a single pop followed by some hissing. If you continue driving there may be popping or knocking noises as you ruin the engine.