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#1 |
Registered User
Join Date: Jul 2003
Location: north of Phx AZ about 30 miles
Posts: 698
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Vapor lock, hot fuel pump
I am having troiuble with my stock mechanical fuel pump boiling the fuel. When it gets hot out (130*+ on the highway) the fuel pump stops pumping. I can duplicate it at home by just letting it idle with the hood closed for a while. The fuel in the clear fuel filter disappears and the squirts from the pump get smaller and smaller then just stop. I poured a little cool water on the fuel pump and it stars pumping immediatley. I replaced the steel line going to the carb with a rubber hose, but it didn't affect it at all. I also checked the fuel cap too.
Any suggestions would be appreciated. I would like to not have to change to an electric pump though. Thanks, Andy.
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Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold |
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#2 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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I'd try insulating your right side exhaust pipe if it's anywhere even close to the fuel line in the framerail.
Usually, that's a big culprit. These trucks didn't have the problem when they were new, so it's likely something that's been changed or modified over the years that's causing the problem.
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I'm on the Instagram- @Gearhead_Kevin |
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