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Thread: 20v burning oil.... what could be wrong?

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    Senior Member dave2221's Avatar
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    Default 20v burning oil.... what could be wrong?

    Thought i would throw the question out there.

    i have no oil leaks, but i am obviously burning oil......

    the 20v is a daily driver with stage 2 cams and EMS, not that that makes a difference.

    thinking i might need to replace pistons and rings (as i may have done some damage running low on oil as my oil gage also shit itself)

    also thinking of going turbo 20v, so if i do need new pistons i would prob go for some forged or something.

    comments appreciated......

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    todd
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    ze rings!

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    Senior Member dave2221's Avatar
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    thats what i am thinking..... hmmmmm

    its a daily tho so its hard to justify taking her off the road AAHHHHH

    have to wait 5 weeks till uni holidays

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    valve stem seals

    does it blow smoke all the time???

    unless there heaps fucked itll blow smoke until it warms up
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    Ok
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    rings or valve stem seals

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    Senior Member dave2221's Avatar
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    yeah it blows a bit of smoke.... especially when i floor it.... also running rich on aftermarket comp too....

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    Senior Member patience's Avatar
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    blue smoke is rings

    grey/black smoke could be running rich and valve stem seals - same problem as me
    it takes about a day to do them, and whilst you have the head off you can do a TRD headgasket and check rings anyway.

    also, shite oxy sensor will mean you will be running a crappier mixture of fuel/air and will be blowing smoke

    Worn valve stem seals will permit excess oil to leak into the compression chamber under a closed throttle. The excess oil builds up in the cylinder and is burnt suddenly when you accelerate. This causes a fair bit of smoke to be noticed until the excess is burnt off.
    Last edited by patience; 18th May 2009 at 03:10 PM.

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    Compression test is the key. Test all cylinders first off to get a base value. Then add a small amount of oil into each cylinder and test again. If the compression much higher than before, it's your rings. If little to no change, it's your valve stem seals.
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    Senior Member hachirusto's Avatar
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    what oil are you currently using in it? what the weight of it and how many kms has the engine done? how hard to push it also will help

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    Senior Member dave2221's Avatar
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    i htink its 45w...... god knows how many k's the engine has done.... bought it with the 20v conversion.

    i dont push it too hard, its a daily, not a track car (yet).

    the weight of the oil does make a difference, as it burnt a lighter weight more quickly than the last lot i put into it.

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