I have an 89 blazer 350 that will not start. I use it as a plow truck to plow my 1000' driveway clear of lake effect snow. (She pushes way better than any Ford.)

What I have verifed.
Cap and Rotor are good. Plugs are good. (New Last Year)
Grounds are clean (pain in the A$$ and time consuming)
I am getting fuel at the carb.
She will not start with start fluid.
Spark is weak. (Yellow)

I have changed in order listed:
New Gas
Igniton coil
Ignition Control Module (New)

What am I missing?
Snow is coming and I am getting anxious. (I live south of Buffalo, NY)

 

kinda a long shot but look up your tailpipe, if the truck has been sitting all year maybe something crawled up there and died blocking the exhaust.

after cranking it a while pull a out a plug to see if its wet then you know fuel is getting into the truck.

try cranking with the cap off, possible broke timing chain?

old trucks are pretty simple. if its got spark and gas itll run