ormgott
Registered User
Got an "86 F250 last year with 7.3 swap that ran fine for about 2 weeks. After that, no start. Replaced lift and injection pumps. Both are working as expected. ALL standard startup checks (prime, starter rpm, etc) were tried. Symptoms are no start and fuel vapor coming up through the intake and also out exhaust. I'm so busy with other projects that I can't work on it, but it seems like if the vapor is coming back through a stuck open intake valve it could cause too rich a mix to fire the other cylinders? Also, I'm located in Connecticut somewhat southeast of Hartford and haven't been able to find a shop that doesn't immediately say "Oh yeah, that'll be $3000+". Add to that the fact that I seem to know more about it than they do (and I'm pretty much a newbie!) Anybody have ideas?