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Thread: Missing under load

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    Senior Member Simmo's Avatar
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    Missing under load

    Totally rebuilt MGA 1500.

    I figured when I put the engine back in I had done the timing correctly as it idles just fine at around
    600 RPM.

    Now, when driving, I find that there is a lack of power and missing at around 2500 RPM under normal flat driving load.

    It has a woodpecker fuel pump which I would immediately suspect but then again its only a 1500 engine.

    What are your thoughts which would be very much appreciated.

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    Great Pumpkin JPSmit's Avatar
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    Re: Missing under load

    My very first inclination would be to check the dashpots - either no oil or the wrong (to light?) oil
    John-Peter Smit
    1976 MG Midget
    1969 Vauxhall Viva GT
    1958 Fiat Multipla (Barn art)

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    Yoda PAUL161's Avatar
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    Re: Missing under load

    Very possible a fuel issue, but make sure the distributor mechanical advance is functioning properly and no wobble on the shaft. PJ

    Remember, Never Forget
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    How good it feels, the hand of an old friend! Longfellow

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    Re: Missing under load

    Dashpots usually cause spitting back rather than missing. I vote for the distributor. Also remember, if your A has the original style plug wires, they're carbon, and prone to breaking.

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