Electric Fuel Pump Issue
We have had some great weather here in Texas so I have been driving the MGB V8 every day at lunch. I am having a strange fuel pump issue. I have a red Holley street electric fuel pump mounted back near my gas tank with 3/8 lines throughout. It works great when I first start driving but after the car warms up and I drive for 10 minutes or so, the pump output slows to a trickle. The car still runs but it has no high speed performance because of fuel starvation. The next day, same thing all over again, lots of fuel at first then slows to a trickle.
I haven't torn into the fuel system yet but this just seems odd and I wondered if anyone has had a similar problem? |
HealeyRick Rick Neville (489 posts) Registered: 12/19/2007 05:01PM Main British Car: 1963 Austin-Healey 3000 Ford 5.0L |
Re: Electric Fuel Pump Issue
Try it without the fuel cap on first, maybe something as simple a a clogged cap vent.
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joe_padavano Joseph Padavano Northern Virginia (156 posts) Registered: 02/15/2010 03:49PM Main British Car: 1962 F-85 Deluxe wagon 215 Olds |
Re: Electric Fuel Pump Issue
Either it's a plugged vent as suggested above or the inlet sock in the tank is collecting crud as fuel flows through it, clogging it. Once you shut the pump off, the crud drops to the bottom of the tank and the cycle starts again.
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Re: Electric Fuel Pump Issue
Thanks Guys. Ill start with the plugged vent idea and work from there. I did pull the gas tank filler cap and there was a big woosh of suction being released, so I thought it must be the plugged vent but even with the gas cap removed the pump continued to not pump much fuel.
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