1991 RC dies at random

[jpcook]

Status

I followed the GM transplant of the ignition amplifier to the fender wall.
I used BWD part #CBE4Z and a coil (3.25ohms) #E520P. Built a heat sink that would cool a welding torch. Adjusted the timing a little bit and the thing runs better than it has in years. I test drove it several times and for hours. All good.

My wife gets in it and backs out of the driveway and it dies. Won't start.
I got it going again, but more white clouds of smoke out the back and a very rough running engine, struggling to keep alive. Let it rest for a few hours and she runs great.

I'll go through the service manual's diagnostics, like I should have in the beginning.

[jgkmmoore]

runs/dies/runs (I'm late here)

Check your fuel filter if your state recently changed over to the methanol gas. That stuff SUCKS, and cleans out stuff that shoulda been left alone, and plugs the fuel filter. RR filters aren't very large, and plug easier than many US cars. After my first(42 gal) tank of that junk, my 97 Suburbans fuel filter plugged on a long distance drive home from vacation, with car full to the brim and towing a boat. 100 degrees in the desert. Happy camper. Methanol is a scourge, and the biggest scam going.
Hope you have it by now.
Regards-Jeff

[jpcook]

I think it's gone.

After the conversion to the Chev amplifier and coil, it did act up one day. But it's run like a champ since. I think that may have been the problem.
I did replace the fuel filter early in the game and it made no difference.
But, thank you for the reply.