Were you leaning out towards the top end while accelerating?a-talk said:I finally bought a CIS fuel pressure tester after years of VAG ownership. Got around to testing control and system pressure on the '90 TQA yesterday. We had a little trouble - mostly the directions on 1) where to hook it up, and 2) what adapters to use were rubbish. No problem though, after a bit of fiddling around we got it figured out.
During the trouble, we swapped in the WUR off my parts car (just made it easier to swap connections). So, system pressure is at a respectable 6.1 bar, and warm control pressure is at 3.6 bar.
So we installed the replacement WUR since it tested OK, and now my power is back! Obviously my old WUR was bunk - we hadn't got any readings before we switched, so I don't know exactly what is wrong with it. Maybe I'll take it apart and rebuild it down the road. But for now I'm happy.
Haven't had a chance to see if my cold-start issue is any better, as it's seeping just a very little bit now at the fuel line connections on the WUR. Crappy aluminum washers! So, I've got to procure some new ones tomorrow. More later . .