So last month I was having some upgrades done to my daily driver 967. A DPI exhaust was added then we moved on to replacing my original fuel lines with braided SS lines. While in that area I had a tune up done as well. But while working on things we found my wiring harness had been cut and re-routed in several places and we were having to tape up and fix things as we went. Once everything was back together the car wouldn't start. It didn't seem to be getting any spark at all. After switching out distributor caps and plugs back and forth from the new ones and old ones we were able to get spark on the left bank but still nothing on the right bank. Obviously the car still wouldn't start so we came to the conclusion that some exposed wires on the harness had probably grounded on something possibly causing damage to the distributor.
A couple of days ago we finally got to putting in a new harness and distributor. We put in new plugs and everything but the result was the same. No spark to the right side of the engine. We tried switching out the ECU and that had no effect. The strange part was that when testing all the sparks, the 3 that weren't working would actually get a little burst of spark as the engine was turned off. We eventually messed with the mixture while cranking and got the car to start and idle. But still only on 3 cylinders. The engine actually idled pretty smoothly considering... But the car barely had enough power to get up my driveway. We then tried switching out the coil and ballast resistor but neither of those made any difference either.
Everyone is completely stumped. We have changed everything that could be causing the problem and nothing works. How can we be getting good spark on 4,5,and 6 on the left and nothing on 1,2,and 3 on the right until that last split second when the key is turned off? What are we missing? At this point we are considering putting in a new system that will bypass the ECU, coil, ect and give us a stronger spark and hope that it inadvertently fixes the problem. Has anybody ever seen or heard of anything like this before?
Any help would be great. As my daily driver, it is becoming increasingly difficult for me financially and emotionally not being able to get 967 back on the road.