Suspect I need a fuel pump...

Discussion in 'Technical' started by facelessnumber, Jun 22, 2008.

  1. PaulS

    PaulS Member extrordiare

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    check the pressure and flow. If it is within specs then buying a new one won't solve your problem.
     
  2. blugene

    blugene Senior member Supporting Member

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    Which way are you turning? Hard left= possible strainer has come off...? Or maybe you need a pump, like we said all along.:D
     
  3. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    Now do as Mavaholic said fill the tank.If the problem goes away then you probably have a fuel pick up tube/strainer problem.When a fuel pump goes,if it gives you any warning at all... the car will hesitate on take off/fall on its face under load,engine will run really lean.It will usually idle all day long with no problem.oil will stink of gas if it leaks into the crank case through the leaky pump diaphragm.
    Or maybe its that ported lateral spark plenum...
     
  4. facelessnumber

    facelessnumber Drew Pittman

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    Bah. Can't be. Shows what you know about reverse-flow lifters... :rolleyes:

    Gene, you might be onto something. Actually, it is a hard left turn that causes it. I can't say for sure that it's always a left, but it happened today after a hard left, and it's most common when I turn onto the highway on the way to work, and that's a left. I'll try punching it hard in some tight right turns, for science of course. But I really can't think of a time when it's happened on a right turn, and I can remember quite a few lefts. Mostly 'cause they were embarassing.

    Mavman72, I'm not exhibiting any of those symptoms, thankfully. But I did fill up Thursday, drove all weekend with no problems until today with a bit under half a tank. (*estimated - my fuel gauge is quirky.)

    Paul, I'll get a gauge on there when I get a chance. What should I look for? When I've used electric pumps on carbs, I shoot for a constant 5-6 PSI. But I assume a mechanical pump will be lower than that at idle, and about that much when revved?

    Thanks for the help everybody...
     
  5. PaulS

    PaulS Member extrordiare

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    flow changes but pressure stay pretty constant with mechanical pumps. They operate with a spring powered diaphragm. The spring pressure governs the pressure.
     

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