Ok, I've got an '87 Audi 4000 Quattro, and I love the damn thing. Had it forever, and have had a lot of good break-down stories. Anyway, I'm having trouble with the car when I'm running down the road, it has been bucking a little and running out of balls, to the point where I'm just gimping along. I went through, made sure I had a good fuel pump (Bosch, it's sweet and expensive) new fuel filter, air filter, and wires/plugs. No appreciable change in the problem. So, I figured it was probably a distributor problem. So I went ahead and did a new cap and rotor, and noticed that my vac unit is bad. The problem is BETTER, but not fixed. I'm pulling real strong to 4000 RPM, and then it just sorta hangs there....the motor makes noise but there's no power surge. So, I THINK that's the problem, my timing's not quite right due to the bad vac. Am I on the right track? I've posted classifieds on the 4000/5000 boards. I need one. Thanks guys.

Cars & Trucks - Audi - 4000 - 1987 Audi 4000 S