A poorly seating valve might explain the very low compression on the one cylinder, if that hapens to be one of the inlet ones it would certainly explain the fuel spiting back through the carb.
That is the exact same syptoms that I was having with my pinto engined Transit .... Never did get that running spot on & as it was sold today, I no longer have to keep chasing the problem
I hope you get it sorted OK
Ray
Do you know what .... I never even give the coil on the Transit a thought .... I ought to know better than that !!
