ok so I have a 02 A6 Quattro 3.0 L V6 With about 173,000 miles on it don’t know the service history when I bought the car it was nonrunning put a new battery spark plugs coil packs got it up and running now I’m have a an issue with cylinders two and five miss firing moved coil packs around and spark plugs same issue with two and five and The oil has gas smell to it