Running too lean.
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.
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.
knocking noise
Crank Shaft.
can you elaborate? engine noise? stationary/moving? ticking, tapping or a definite knocking?
NO. A knocking noise in the engine is a problem in the engine.
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.
When your engine has a knocking noise, it could mean that a rod has been thrown. It could also mean you are low on oil.
Sorry, disregard this question, I didn't word it properly.
maybe the carberator i dont know im not a machanic or anything
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.
sell it