Replaced engine harness

[John B]

My #3 cylinder went cold again. It happened the first time at the track and switching coils in an attempt to diagnose the problem "accidentally" cured it and I was able to finish the weekend. Now, with all new coils, it's happened again. Dead #3 cylinder and a black sooty plug again. So now it's war. if it sparks or squirts it's getting replaced. I decided to replace the 20 year old engine wiring loom as well. We do that after 10 years on our race cars. SBD in the UK was great in helping me determine exactly what I need and getting it to me quickly. There are soo many sensors and connections, but everything fit perfectly. It started right up and runs smoothly on all 4 cylinders now. I think there must have been a short in the harness. 

Edited November 14, 2022 by John B

[wemtd]

Definite possibility… amongst my gremlins in September was a frayed & broken wire in the #4 cylinder coil wire.

[CarlB]

The original equipment connectors the car companies use aren't made to be taken apart very many times. Wiring just wares out on our cars quicker than an ordinary production car.