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<x-charset iso-8859-1>Just got done with some more troubleshooting on the situation and fixing some issues, so I am essentially starting from scratch with this post. Valves all adjusted to .006 (most of them were VERY tight) Compression tested, all cylinders 110 to 120 psi All spark plugs gapped to .024 Dwell set to 46 deg. Found out #3 and #4 injector connections were reversed, corrected. Throttle switch adjusted Dist does not have any noticable side play Removed and cleaned FI contacts in dist (man they were nasty, but did work) Idle set to approx 850 Somewhere previously someone has installed a set of resistors inline with the head temp sensor, to enrich the mixture Im guessing. When I came across the tight valves #1 and #4 exhaust were espeically tight, I thought I had found the problem behind the rough idle. But alas that is not the case. The idle still drops about 50 rpm seemingly randomly, but often. This happens while driving at slow speeds as well. Pulling #2 or #3 plug wires off while the engine is running results in something like a 150-200rpm drop. Pulling off #1 and #4 results in a 50 rpm drop or so. To me this still points toward something to do with the FI. Do the injector points have a "dwell"? the rubbing blocks on mine were pretty worn. I am thinking that I may do the test in Kjell's guide to D-Jet (http://mail.symuli.com/vw/Djet.html) to ensure that all injectors are dispensing the same amount of fuel next. And I still need to check the fuel pressure, guess I am going to have to go buy a fuel pressure gauge. Also found out the throttle shaft in the air distribution box is leaky (shot some chemtool on the shaft) I guess this is the reason that I feel no vacuum on the port that goes to the vacuum retard on the dist.? Drake (getting close to putting the FI system in a box and installing carbs, but having a blast diagnosing the problem) Lawson San Jose, Ca ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/ </x-charset>