[V8] idlle /driving problem continues

[John Dodd]

I thought about it but never tried to see if the catalytic converter is
bad. Maybe the snapping sound is coming from there.
A friend came with the idea of using an AM radio to check for electrical
misfiring. We placed it in the vicinity of the engine and it does indeed

give some clues on the firing etc.
I did manage to swap ignition coils with no results and I will try some
new spark plug wires after checking the cat conv.