Why does my 1999 dodge 2500 4x4 ping real bad after it has been warmed up for a while and seems to be burning alot of oil? I have tried using premium gas but this does not help at all. I am adding at least 1 quart of oil a month.

let liquid wrench set in ..spray and set over night...or better yet use marvel mystery oil....if still stuck ping on bolts with a tapping hammer...not real hard but alot of pings will free it up...best way is air impact gun......jus keep on impacting out and eventually the bolt gets hot and breaks free

Jenifer, it sounds like the oil lines from the oil pump are clogged or the pump itself is defective. Please do not run the engine until you get it checked out. If the oil pump in the bottom pan is not pushing oil to the top of the engine the valves and cams are not being lubricated and will burn up...Bue, Bye engine!

Your cat won't cause your vehicle to smoke, unless there is oil on it, then as the exhaust warms up, the cat will burn off the oil. Chances are, there is something wrong with your engine.

There are a few diagnostic steps you can make to see if you're burning oil, running rich, or have a leaking head gasket:

Check your plugs. If they've got oil or a filmy, soot-like deposit, you've got worn valve guide seals or worn rings, and you're burning oil, or you're running rich, indicative of other problems.

The exhaust "smoke" that you see, if it's like a white/gray cloud, could be steam from a leaking head gasket or water in the intake. If it's blue-ish, that's normally running rich. If it's black, you're probably burning oil.

one bolt up top under hood and the other lower a arm easy you can do it you my need upper and lower balljoints must be pressed in and out that how i get the squeaks out

Are the spark plugs oil fouled? Is the oil leaking out or is it burning it? You could do a cylinder leakdown test, to determine if the rings are good. The valve guide seals could be bad. Anyway ,the future is not real positive for that engine ,if it uses oil. No amount of oil additives will correct it. You won't pass inspection.

I think you've called your solution, knock sensor!

The plenum problem should not affect compression tests. It allows oil to get sucked into the intake and will cause carbon buildup, plug fouling, and pinging. If you have zero compression on a cylinder, it is usually a valve problem. Even a burned piston will make some compression, unless it has a big hole in the middle.
Sorry, but if your compression results are to be trusted (and it seems they are), then you have to tear a head off to find the problem, or at least get a borescope in it.

It could be burning and you don't notice. Remove air filter box assembly from top of intake manifold. Hold throttle wide open (engine off) and look through throttle body (flashlight may be required) and see if oil is puddled up inside manifold. If so then the intake manifold will need to be removed so the lower pan gasket can be replaced.

could be the oil breather thats clogged up with oil or it could be the maf, try and see if that helps

could just be a bad spark plug wire or spark plug remove for that cylinder see if you find any thing in that area.....irongod ps; somtimes the plug wire will get burned or just a bad spot on them look real careful at it