I am hoping this has happened to somebody else, because I can't explain it.
I had trouble starting my 68 Camaro this spring. The plugs were flooding and it wouldn't idle. I have since reset the floats in the carb, and the needles and seats have been cleaned, along with the plugs cleaned and regapped.
The car started after doing these things and idles after warming up. However, I noticed that my #2 header tube was cold after 10 minutes run time. I started using my multimeter and checking wires and plugs for resistance. I cleaned that plug off again, and installed a new set of wires, because I knew my old set had a few nicks. I fired it up today and #1 header tube stayed cold, but #2 got hot. The only thing changed was the wires. I removed the new #1 wire and installed the old #1 wire, and the tube stayed cold. I could grab the tube with the car running.
Sorry for the long post, but I don't know what is going on. Any suggestions??