mines suddenly running mega rich ie misfiring and black clouds out the back if u drive it normally ie low revs/throttle it seems ok but if i give it some it starts running terribly doesnt want to idle rough as hell when pulling off really smokey theres also a noise that gets worse its a bit like a fan it gets worse with higher rpm and u can hear it from about 3k onwards i can only hear it in the cabin i cant hear it in the engine bay