Hey there, I just bought an 87 audi 5000 Quattro. Around 140k on it. My problem is that it has been sitting for over a year and the guy who had it before me replaced the whole fuel system from tank to fuel distributor (cis). The 3mm air adjustment screw had not been tuned. He claims that will fix he issue. When I got it car would not start but would turn over. Seemed like no fuel. Took the injectors out and cleaned them out with carb cleaner and 45psi to open them. Now they all work and all spray consistent with each other. THE PROBLEM now is that the car will start , rev and idle just fine for a couple minutes but after a few minutes it struggles to idle then dies. It sometimes seems to load up on fuel and would bog at just over 2krpm . After it has started once it will not start until a few hours later. Seems like to much fuel. I am also not sure what the brass 6mm hex adjustment screw does on the intake. Any info on that would be awesome. I know it has compression. 130psi on cly 4&5 120psi on clys1,2,3 . I believe minimum is 115. Any thoughts?