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  • Fuel Pump problems

    I have a 05 Roadstar Silverado which I recently installed a new (oem) fuel pump. I first tried an aftermarket pump which I thought was defective because it had kept on jamming up. I had to release the fuel line pressure for it to start pumping. I started to go down the path of eliminating the pump but backed out after installing the bigger float valve. I put in the original equipment fuel pump which worked fine for about a week than did the same thing the after market pump did by jamming up. I was able to make it home by pulling out the choke and going about 30 mph on a level road. I really want to get the original setup with the fuel pump going. Anyone have any thoughts of what's going on with the pump jamming? I've found that if I throttle the petcock where it is barely open the pump will not jam. Thanks

  • #2
    Have you tried opening the filler gas cap to see if there's vacuum? Sometimes the roll over valve sticks.
    make sure the tank is venting good.

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    • #3
      the pump is supposed to shut off when pressure is built up. It sounds more to me like you have a massive air leak. Is there any backfiring going on especially at decel

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      • #4
        I've tried running it with the gas cap off with no success. The bike ran fine originally when I replaced the after market fuel pump with the OEM. When I turn on the key the pump runs for about 10 seconds then stops. It's not really back firing even though the baffle fell out of my Vance & Hines HS Pro 2 into 1 exhaust.(I'm not have a good couple of weeks).

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        • #5
          when turning the key on, running for 10 sec or less is normal and exactly what it is supposed to do. When the bike runs and uses fuel from the fuel bowl the float will drop and will open the float valve to allow more fuel in and the pump will again start to pump.

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          • #6
            Sounds to me like your pilot jet is plugged if you needed to pull the choke out to make it home on a level surface. Carb been apart recently? Have you tried opening the bowl drain and turn on the pump to see if it continues to flow?

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