Removed dioed harness to coils and bench tested the dioeds. They seem to check ok. Installed and still will not shut down correctly. I think the fuel selonide is making it shut down because it runs for a few seconds and then shuts down. I replaced the dioeds with new ones (IN4007- 1000Volt) But still wont shut down fast. Anyone know what the voltage off the lugs on the coils when running? Might be a problem with the one of the coils but it runs perfect when running. If I can isolate one coil from the other and figure out where the problem is. I know its not a grounding issue because I have a good ground from the engine block to the battery. Also tried to ground the dioed harness spade that goes to the key switch. ( connector block on engine) Any ides will help... Great site...thanks