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On 5 Nov 2003 at 7:30, Tony Rongey wrote: > I'm finishing up a rebuild of a '69 FI AT Square. Got > it running this week, but only on the left side! I > can pull the wire on #1 or #2 with no effect. #3 or > #4 will kill it. I've got 30psi in the ring. Timing > is good Of course, if you just rebuilt the engine, there is the chance that you did something right or wrong on the right side only. I consider that low probablity. Externally, there are really just 2 things that are likely to affect both #1 and #2, without affecting anything else. Either you have the 2 spark plug wires swapped, or the ground wire for those 2 injectors is not well grounded. You can check the first one by just following the wires, or using an inductive timing light. The second one may be a matter of using a clip lead to provide an alternate path to ground for the ground wire, just to see if this helps. Note that 68-9 FI cars had a problem with the injector grounds which connected to the head screws. These always corroded, or something, and lost good contact after they were rebuilt. For some reason they were just fine as long as they weren't disturbed. This can be fixed by making an extension wire to connect these ground wires to the middle of the case and grounding them there where they don't heat cycle as aggressively, or by adding a strong spring washer under the head of those screws into the head. I have some Belleville washers which would be perfect for this. In '70, VW moved those ground wires to the center of the case and they were no longer a problem. I understand that you've checked the injectors and verified that they were spraying, but if you've put this engine thru a few heat cycles, they may have stopped. If you find a problem on the right side, you should fix both sides because they will both fail eventually. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org