motor is making a puffing noise while running and jerking running rough on 1996 Ford Mustang GT

check engine light comes on and off ideling fast and sounds like it wanted to explode

Asked by for the 1996 Ford Mustang GT
Check the engine for oil and water but have the car towed somewhere to have the vehicle scanned for trouble codes. The codes stored will indicate where the problem lays. I hope it is not mechanical.
There was Coolant in where the sparks plug area an