Started shutting down suddenly, would restart after 3 or 4 sec. Would run several days, shut down and restart. Interval kept getting closer. Finally shut down 5 times in 1 mile, got it home and parked it. Would not restart. Thought bad fuel pump (frame), replaced, no joy. Replaced fuel filter, bled, no joy. Replaced crank shaft sensor, no joy. Cranked today, ran 5 sec, shutdown no restart. Checked for codes, says comp ok, all other checks, n.a. Plenty of fuel at filter bleed and air bleeder valve. The only thing I notice is new fuel pump runs about 10-15 sec before shutting off. Before I changed out the fuel pump it would only run 3 or 4 sec and shut off - may just be a diff. pump ? Have rechecked and tighten fuel lines at pump but was shutting down before same as now. Suspects ? Need help. Checked other threads: Column switch? PMD what is that? other stuf - IP, ? injector pump, hope not - expensive! When motoring engine to start, oil pressure reads 40psi, that should be ok unless bad/eratic switch ? Is there a IP pressure switch that can go crazy (bad)? Where is it and how do I check it? Any help would be appreciated. I am having trouble trying to figer out how to nav these threads, my e-mail is flsparks@gmail.com Thank you for any help! James H.