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Thread: fuel pump or fuel regulator
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08-31-2018 #1
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fuel pump or fuel regulator
EFI guys not sure if this is a issue but I'd thought I would ask. so my elco has a 383 with efi the first efi was Mass-flo, I got rid of that for a more user friendly tuning software holley efi hp series. well my question is the old EFI (mass-flo) then I shut down the engine the fuel pressure gauge would still hold pressure. but as soon as I went with holley it now bleeds down instantly. didn't know if that is the issue as I seem to have hesitation issues so was wondering if the pressure drop means my regulator could be going bad!
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09-02-2018 #2
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More info is needed.
What fuel pump? What regulator? Did the fuel system plumbing change when you switched to the HP?
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09-09-2018 #3
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Yep, plus where is the regulator located and plumbed.
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09-09-2018 #4
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When mine had problems holding pressure the hose inside the tank had shrunk and gotten loose...
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