INDICATORS ON 4AGE 20V BLACKTOP YOU SHOULD KNOW

My 4age 20V is managing way also rich and gives black smoke with the exhaust. What i also discovered is a vibration at 3/four throttle to WOT with about every RPM. Would not seem flywheel related imo, even though I'd that dilemma on other cars and it sounded diverse.Owning VVT in place means that the consumption cam is not really readily adjustable