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On 9 Jan 2001, at 8:33, Fuhriman, Mark wrote: > And it is indeed just a pulse. A tiny pulse. But enough that I can > see all 4 injectors getting the electrical signal when all 4 cyls > fire. After driving/idling for a while and the engine reverts to just > 2&4, I get no more pulse at 1&3. But I do still get the tiny pulse at > 2&4. So I am sure that the dead 1&3 injectors, when they are dead, > are not getting the electrical signal. And 1&3 go out/come in > together. Okay, this is good. I agree that we can quit worrying about the injectors themselves. > > The problem with this theory is that the 1&4 injectors and the 2&3 > > injectors fire together, not 1&3. This would only be true, however, > > if the injectors are wired up correctly, so my guess is that the > > injector wiring is swapped on one side of the engine. > > OK, I am sure that the injector wiring for #1 and #2 is OK because > these injectors still have their color coded boots over the connectors > (black in front, grey in back). But the #3 and #4 injector wiring has > been cut up and spliced to the point there are no more numbers or > boots at the ends of the wires. I'll retrace and check continuity of > all injector wires back to the ECU to see if they match the FI wiring > diagram in Bentley. I'll do the same for the trigger contact wiring. > I have a butchered harness I salvaged from my old '70. The injector > wiring for 3&4 is still intact, so I think I'll splice it into my '69 > harness some time soon. I think you're going to find that the 3/4 wiring has gotten swapped and that the problem is with the trigger points. I understand that this has been a LOT of work for you, but you've done a good job of working thru it, and I think your work is just about done. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org