1988 blazer, no spark?

Tooljunkie said

Glad its solved.
But odd. A dirty reluctor?
Perhaps a bit of moisture too.

Click to expand...

Yup. Probably a coincidence/luck thing. Usually cap, rotor, module on HEI units does the trick every 200-250k or so. No reason to track down which $2 part it is. Just replace the whole thing and you're good to go.