After replacing the EFI harness I fire the engine after 2 weeks. I was still running a bit rough after blipped the throttle couple of time a white smoke (actually I think it's unburnt fuel) started coming out of left tail pipe. I stopped engine after a couple minutes of idling. Then it won't start anymore. It tries to start but a moment of firing the engine abruptly stops. Same thing after three more times. ECU reading is 34 for detonation sensor which I haven't replaced. Could this be a sign of a bad ECU? Greg
