number_one_scott

Hello, have a S4 6spd man with 95,000 miles on the clock. Bought it with a rough running issue, all 4 plugs on left bank were extremely oil fouled, plugs were original as well. Right side plugs were by no means good but better....car now runs really strong through mid range / up top. Every now and then just about 2000RPM slightly accelerating I feel the engine misfire and if I immediately look in rear view mirror I notice quite the blue oil smoke cloud behind. Now that said this is the only time it smokes blue ONLY when it misfires. PCV valve?? I have VAGCOM, only stored code I pulled was injector 2 circuit issue.