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Thread: My little Series 2

  1. #101
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    22,893
    The dropping idle and stall is probably the rich running - mixture suits the cold engine, but is too rich when the engine is warm. If adjusting idling mixture does not fix it, then it is probably a carburettor issue. I don't remember what carbie you have, but with the Zenith this is usually the O-ring not sealing perfectly. There is a slight possibility that it is something else, such as a heat sensitive part of the ignition system, or that the engine is actually overheating.

    The base of the carburettor will normally get cold - evaporating petrol takes heat. Nothing to worry about until you get ice build up internally - never heard of that happening in this engine. That is why the exhaust manifold is attached to the inlet manifold. Early exhaust manifolds had a thermostat controlled deflector that adjusted the amount of heat, but later ones dropped this. Probably reduces maximum power slightly.
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  2. #102
    Join Date
    May 2011
    Location
    Warrandyte, VIC
    Posts
    119
    JDNSW - It's a Zenith Carby (new).

    I have some gaskets and o-rings on the way, so i'll replace what I can and see what happens.
    1960 SWB Series 2 UTE
    1963 LWB Series 2a UTE

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