Re: cleveland in xb problem.
I've just had the same issue as my carb/engine etc was sitting around for about 6mths. When it first fired it fired on all 8, then slowly carboned the plugs, then went on the not start at all.
I tried everything, including another dizzy, I spent $215 on my electronic dizzy replacing parts.
I set everything up on 10 deg with a points dizzy, it fired up, ran it for about 20 mins, left it setup @ 10 deg, threw the electronic back in and alls good so far.
My guess is jammed neddle and seat? Or crap in the bowls/line?? I never found my problem, it just went away.
Make sure the idle mixture screws are correct also, as thats stop it idling.
XB Fairmont (street car) firstname.lastname@example.org.