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Old 10-11-2010, 09:03 PM
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Airtex fuel pump

I have several early Ford cars and vehicles (B's, V8-60's, 21 and 24 stud flat heads) so I hope this allows me to ask a question about an electric fuel pump that I have installed on a dune buggy with a 914 Porsche engine.
The pump never stops running (pulsating) while it's getting current from the switch.
I have mounted the pump in a horizonal posiition about 18 inches below the tank with a pressure regulator on the outlet side. (A Filto-Reg which is set at 5.5 psi).
The engine runs, and I have fuel coming to the carb (although it doesn't feel like 5 psi).
I have good flow from the tank to the pump. I removed the fuel regulator and plugged the pump outlet, turned the switch on and the pump never stops pulsating.
I can't believe that this pump should operate continually.
Thanks for your help
Don

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Last edited by DerDon; 10-11-2010 at 09:11 PM.
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Old 10-14-2010, 10:30 AM
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I just installed an E8012S and there is no provision for a shutoff. It simply peaks at max pressure, but keeps on running. This is normal.

GM uses oil pressure as a source to shut it off in a crash. Ford uses an intertia switch. The only reason any manufacture shuts their pumps off is to prevent fuel flow in a crash (once the engine dies).
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