WHAT DOES A BIG WOOF OF SMOKE OUT THE PIPE MEAN? on 1994 BMW 525i

I recently bought this vechicle from a family member an when I drive the car it smokes alot. It comes from the back the gas pipe. I put oil in it an it seems to not smoke as bad please help me? NO CHECK ENGINE LIGHTS ARE ON.

Asked by for the 1994 BMW 525i
0 answers