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Thread: Zen oil sludge in spark plug

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    zengetz's Avatar
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    Zen oil sludge in spark plug

    Guys my dad's zen has been unused for 2 months now since he fell ill and I was trying to get its battery charged and get it running yesterday.I was doing a normal checkup on oil level etc and opened the spark plug to give it a clean up and to my horror I saw one of the sockets where I unscrewed the spark plug had thick oil sludge.

    I remember driving the car a couple of month and I knew it was not right and had very poor pickup and a strange chemical smell..

    I remember our premier padmini had a head gasket leak long time ago and water sept into the head and caused a oil water mix sludge..

    Please advise if this is the same case

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    If you have oils sludge on the section that is inside the combustion chamber then it is unlikely thatthe engine does even start.

    When you find oil sludge on the spark plug it is usually some oil seeping throught a leaking cam cover gasket or oil that have been spilled when topping up oil.

    The sluggish performance can be because of many reasons but are unlikely related to what you found.

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    zengetz's Avatar
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    Quote Originally Posted by drifter View Post
    If you have oils sludge on the section that is inside the combustion chamber then it is unlikely thatthe engine does even start.

    When you find oil sludge on the spark plug it is usually some oil seeping throught a leaking cam cover gasket or oil that have been spilled when topping up oil.

    The sluggish performance can be because of many reasons but are unlikely related to what you found.
    The oil sludge is not 'on' the plug but after I unscrew a plug there's sludge inside the threading and the plug looks like a chip dipped in sauce.

    The other plugs are clean except for one chamber.

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    Quote Originally Posted by zengetz View Post
    The oil sludge is not 'on' the plug but after I unscrew a plug there's sludge inside the threading and the plug looks like a chip dipped in sauce.

    The other plugs are clean except for one chamber.
    Could you pm me a picture of it, please?

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    Quote Originally Posted by drifter View Post
    Could you pm me a picture of it, please?
    Yeh sure I will post a pic tomorrow after I get home

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    S.H.E.R.A.101's Avatar
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    i think your engine cylinders need a new piston and rings
    -M&M Scorpio
    -Hyundai accent
    -m&m major550 MDI
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    -bajaj pulasar 200 dtsi
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    I too had same problem with my Baleno. But after carefull examination it was found that the spark plug gasket (a small washer like thing) was not seated properly. Most probably that should be the reason or else it must be piston ring issue. Hope its just a minor problem.

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    Kapil Kaushik's Avatar
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    if the car has done above 1 lakh ..then most likely its the rings.
    best thing to do for now is get a new spark plugs and replace all .
    Monitor this for a week if its a real leak it will comeupo again and you would notice that with reduce in pickup.
    Petrol Head..
    kaps

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