Truck stalling

[Nicu7]

I just got a f150 v8 1991. It's definitely a project truck. It's got some blow by but runs fine. I drove it 140 miles home it ran fine. The other day I drove it around 6miles and it died at a stop light, but fired right up. I drove another 200ft and it died at the next light. Took a few turns of the key to start. I drove a few miles back home and it died again on the way. It always fired back up. When I got home I let it idle in the driveway for around 20 minutes and it ran fine? No dash lights came on. Any ideas? I changed the oil after wards and flushed the radiator. Could it be a vaccum leak? Heard that was common with these. Thanks, Jeremy.

[Jersey_Joe]

Could b vacume yes. Put some fuel injector cleaner in it and check ur plugs. But sounds like a vacuum leak

[5.0Flareside]

Sounds like a vacuum leak.. I have this issue once in a while with my truck

but its not a leak its cause the MUCH bigger than stock cam and heads producing lower vacuum..


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[lee reece]

You said a project so has it been sitting for a while ? I would change the fuel filter and check plugs and dist. cap,rotor! Also if you suspect vaccum leak and can't find it check vaccum booster for the breaks!! Good luck!

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