You have no wheels.
- Geoff
A damaged catalytic converter could cause that.
Fuel is not good!
Depending on the extent of the clog, it could cause the engine to lose power under a load or accelerating and in severe cases the engine may not run above an idle. I don't see it causing any one cylinder to missfire.
The most probable cause is poor fuel or water in your fuel. This could also be due to the timing being out of proper adjustment.
Could be as simple as a tune up.
Perhaps it is your pcv valve or rubber elbow connector that is hooked up to the pcv valve.
could be two things. if it does it while idling or accelerating, then its probably a spark plug not firing. if it only does it while accelerating or under load. then its probably a spark plug wire. either way, as general maintenance its a good idea to replace all the wires and plugs. Clogged catalitic converter will cause it to lose power.
Check for a busted engine or tranny mount.
Slow engine RPM is the main reason a car may be sluggish while accelerating. However, it also could be due to the oil.
could be a bad plug
Engine knock can be caused by several things. Carbon deposits in the engine can effectively raise the compression ratio of the cylinder. When accelerating, the cylinder gets filled with more fuel and air, and the higher compression ratio causes knocking. Other possible culprits could include spark plugs being too hot or your timing being off.
Several things could be making the Lumina growl. Check the belts and pulleys on the front of the engine. Check the engine mounts as well. Either of these areas can cause the problem of the growling noise.