George20s

Just brought my first Audi at 20 paid £4400 has 110k miles, drove car home and blueish black smoke coming from rear as I accelerate hard, also have a slight knocking from top of engine which goes if I blip the throttle, was driving along in 6th gear 50mph and epc light come on however stopped car turned it off and on and hasn’t come back since , also keep getting a low oil pressure light however car has sufficient oil. was told by my mechanic all can be fixed by replacing the pcv valve anyone had similar issues, or anything related to this. Thanks George :)