I have an 86 300sdl with 75k on it, when accelerating I have to give it a good amount of throttle to get going if I want to accelerate quickly, but once the rpms go over around 2000 it starts to pull hard and I have to back off the throttle. It seems to me that this would indicate that the alda is out of adjustment? The only smoke that is visible is a haze at idle and upon acceleration at night in the headlights of another car. In the day I can only see smoke if I floor the pedal.