It seems that I have to pump my bronco 25+ times to try and get it to start... It seems to be spraying plenty of fuel into the venturis when I move the linkage by hand looking down into it. Once I get it started it runs great starts right up even if it sits for a couple hours. But if it sits anything over 6 hours same thing. Any suggestions? Its a 2bbl and I cant tell what kind, theres no label anywhere..