Cadillac Repair: 1994 Deville Concours 4.6 Motor I Need Help ASAP, exhaust pipes, deville concours

Question
My exhaust pipes are blowing blue smoke out of them my car is running fine only problem is the smoke I've change all the spark plugs but it is still blowing blue smoke and the oil top smells like it has gas in it somebody please help me

Answer
Sounds like one or more of the fuel injectors is leaking to much fuel into the engine.

Pull the spark plugs and see if any are gas soaked or show signs of a heavy blackish residue on the electrode ends.

IS or HAS the CHECJK ENGINE light ever illuminated while driving the car ?.