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Thread: Flavia engine producing strange whistling noise

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    Flavia engine producing strange whistling noise

    After rebuilding this engine it produces a very strange noise. Does anyone have an idea where it comes from?

    https://youtu.be/I6sSLmSttNY


    Thanks for any advice.

    (Sorry for the poor quality of the video)



    Hubert
    Flaminia GT 3C, Flaminia Convertibile 3C, Flaminia Coupé-project-, Flavia Convertibile 1.8, Fulvia Sport 1.3S, A112 Abarth 70HP, Mercedes Benz Unimog U406

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    Re: Flavia engine producing strange whistling noise

    Sounds rather like the "ringing" sound that comes from the cooling fan. Is the fan belt attached?

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    Re: Flavia engine producing strange whistling noise

    Quote Originally Posted by Miltonian View Post
    Sounds rather like the "ringing" sound that comes from the cooling fan. Is the fan belt attached?
    What i did in the meantime:

    - checked and adjusted tension of the v-belt, no effect

    - diconnected the generator, no effect

    - disconnected fan, waterpump and generator by taking off the belt, no effect

    - replaced the carburator, noise is gone.


    The inspection of the carb showed that its baseplate is not even any more. The four corners are bent down from tightening to strong, so there is a gap forming in the middle. This gap (actually four gaps, even at the short sides of the baseplate) obviously is too big to be closed by the gasket but not big enough to let the engine die from lean mixture. Furthermore the false air being sucked in seems to have created the whistling.

    Hubert
    Flaminia GT 3C, Flaminia Convertibile 3C, Flaminia Coupé-project-, Flavia Convertibile 1.8, Fulvia Sport 1.3S, A112 Abarth 70HP, Mercedes Benz Unimog U406

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