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Thread: head gasket on 2.2 sri

  
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    gazza1591's Avatar
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    head gasket on 2.2 sri

    i went to have a look at a astra 2.2 today.test drive was fine temp was ok got back and checked the oil cap and there was like a white eggy colour mayonaise on it not that much but a bit.i took out the dip stick and this also had a bit on it.the water was fine fdo you think it was the head gasket ?it was a 2002 model with 28000 on it from a garage.

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    dannysport18's Avatar
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    was it from a vauxhall network Q garage ??? how much was there there will be a bit but not lots i would walk away from that car

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    If could be the head gasket and it could just be a build up of emulsified oil - especially if the car has only ever been used for short trips.

    Quote Originally Posted by Ffoeg (from some time ago)
    The stuff under the oil cap (AKA mayonaise) is an oil/water emulsion - they can and will mix given the right circumstances.

    When you switch off your engine in weather like we've had recently, ie cold & damp, condensation will from inside the cooling engine. When you start it up next day the condensation gets thrown around with the oil and the churning action of the engine causes the oil and water to form this emulsion over time.

    However given a long enough journey the water is normally boiled out by the heat of the engine, but if the journey is not long enough the water can't boil away, and when you switch then engine off again more condensation will form, compounding the problem.

    And this goes on and on, increasing the deposit inside. As it's not too runny compared with the oil it usually gets stuck to in side of the cam cover - which is what you've got.

    Changing the oil will help, but they'll be plenty more inside the cam cover to redistribute over the oil cap.

    To cure - remove cam cover and clean all the deposied crud out of the cam area.
    Clean the engine with engine flush.
    Replace oil and filter.
    Go for a long drive to boil out any remaining oil.

    The only way to stop it coming back is to make sure that every so often you go far a decent long drive. you should be OK once the weather gets warmer/drier.

    All tractor drivers are well aware of this condensation effect- as it's the main reason for water in the derv.
    Either way - get it checked out to be sure, or look elsewhere

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    Autosparks's Avatar
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    It could be that the car has been shuffled about alot on site and not run up to temperature at all, I had the problem with mine like that over the winter
    Want a professional job done on fitting your aftermarket electrical accessories? PM me for a quote
    Electrical fault finding also taken on
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    it was an independant garage there was not that much on it.and it wasnt that bright in colour.

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    Might be worth getting an AA/RAC check on it then - if it is condensation it's easy enough to sort out, and you can use that to get the price down.

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    well the bloke who was trying to sell it was goin to get his mechanic to look at it tommrow.i was goin to get 12 months warranty with it.and it was a big car place they had some real nice and expensive cars there.

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    StevesAstra1.6's Avatar
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    Hey


    i had that in mine mate when i brought it. Done a oil change , changed the oil filter and buy the best oil

    After 2 weeks it was gone.

    this was 8 months ago and i open the cap and its still clean

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    BoltonDave's Avatar
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    yeah i agree with the above. Maybe the car has been sat around for a while. So long as it's a reputable garage then you should be ok. I assume they will change the oil for you before you take it away. Then just keep a close eye on it...

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    yea he said he will do a full service on it before i had it.is there any other way of checking if it has gone ?

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