Electric Fuel pump question

Sep 29, 2018 12:06 AM - 305 Views Create A New Thread

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Blaine, WA

What does this mean?
I have a Holley red top electric fuel pump 12-801-1 in my '37. In the instructions it says "Provides constant fuel flow with no pulsation". Does that mean it runs constantly when the ignition is on? Mine runs constantly even if the engine is off and the ignition is on. I have a regulator in the supply line, and the pressure doesn't continue to build, stays constant at 6 lbs, but I would have thought it would shut off when it reaches pressure. I don't have a return line with this model.


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  • Bill33
    Sep 29, 2018 at 9:22 AM

  • I'll try that Verne. I have it on a rubber gasket, but maybe not thick enough.

  • crdnblu
    Sep 29, 2018 at 9:19 AM

  • For for the noise, consider isolating the pump from your frame with rubber grommets, or a rubber pad; (old truck inner tube rubber, thicker than passenger tire tube rubber, is great for this application.....).

  • Bill33
    Sep 29, 2018 at 9:04 AM

  • Definitely noisy, but fortunately the car is much noisier than the pump. Once it starts the noise is gone. I wonder if you can wrap it with sound deadener, or would that make it overheat?

  • 32 Dodge
    Sep 29, 2018 at 8:14 AM

  • Sounds correct to me. I have the same set up in my car. (No return also).
    All above sounds normal to me. Noisy isn't it?

    I also have a second one in line as a back up. (Needed it twice).

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