You might have to crank the engine and step on the accel.to see if the butterfly opens. Additionally, as I remember, there were 2 or 3 wires spliced on neg coil.
I'll send you over some info to your email, but this is not rocket science it should not be to difficult to find.

You did say you are a car machanic, I have an issue w/ one of our chevy vans. V-6 vortec chevy 2000 express will not start Monday morning, when it rains durning the week end, truck is outside. Tuesday morning, starts fine w/ 24 hours of drying time.
Got spark and fuel, book says weak spark is like no spark( it dont look weak to me, but may when damp its just below level).
Any ideas? Was told to look at the fire wall connector or spark making componet.
Thank you