Stock '67 230. Still has orginal everything (monojet/stock intake and exhaust heated) I have hesitation at cruising speed and some backfires when I get off the gas. I have Lots of power when accelerating and idles great.
I do have 2 cyl's that have 30 psi lower compression.... but I dont think that is the issue because after driving it the plugs all look great... no fouling at all! The lower compression I have isolotated to rings and hope they will free up with use since the car sat for 10 yrs before I got it. I have checked the timing too and the advance seems to be working. I have rebuilt the carb a wile back.
I was thinking for a backfire to happen unburned fuel and spark would be needed.
Any ideas?
Thanks as always, Clyde
