Forums General Counties Cars Discussion A40 Devon – weak power

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  • #1417
    suri2
    Participant

    Hi,
    I have AUSTIN A40 Devon. The engine is equipped with a Zenith 30 VIG-8 carburetor (IG2547). The start is ok, the idle is OK, but when the throttle is added, the engine starts to suffocate. It has no performance at all (selected neutral). It will help to pull the choke. Then the engine behaves OK. AC pump check – OK, fuel filter cleaning – OK, carburetor nozzle cleaning – OK, in the float chamber is gasoline, the membrane is not cracked and is flexible. New spark plugs, contact in the distributor cleaned. Changing the timing does not help. I’m already helpless. I would be grateful for any idea or advice.

    Jiri

    • This topic was modified 5 years, 7 months ago by suri2.
    #1421
    number5
    Participant

    Hi there Jiri,

    Have you considered to strip down and clean all of the carby components, especially the jets. Seems like it could be the main jets that might be partially blocked.

    Cheers-Peter

    #1423
    suri2
    Participant

    Hi Peter,

    thanks for your advice, I’ll try again to check it out jets. Repetition is the mother of wisdom. In a while I will be able to do it even blindly. There’s too much air or little fuel. Thanks, I’ll check it out once more.

    Regards

    Jiri

    #1425
    number5
    Participant

    Hi there Jiri,

    If your carby problem is still hassles, have a look at the following article on web address. It might give you an indication on something you may not have yet checked.:–Id10.awardspace.com/bay/carb.htm

    Regards-Peter.

    #1429
    suri2
    Participant

    Hi Peter,

    Thank you very much for your help. I once again dismantled the carburetor and cleaned it thoroughly in an ultrasonic cleaner. I exchanged all the seals, aligned the flange. I sealed the bigger inequalities with silicone. The engine works great like a Swiss watch. 🙂
    Now the fuel tank is leaking. 🙁
    But it’s life. 🙂
    Thanks

    Jiri

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