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Thread: does blue smoke coming from the exhaust mean my piston rings are gone

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    Default does blue smoke coming from the exhaust mean my piston rings are gone

    does blue smoke coming from the exhaust mean my piston rings are gone?i just got the thing turboed and was thinking its because i havnt got a 2 bar map sensor in there so fuel isnt mixing right but i could be wrong any help would be apreciated thanx

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    blue smoke usually means rings, white smoke means head gasket. see if there is no oil leaking onto the exhaust at all . could also be valve stem seals

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    Quote Originally Posted by tr11py View Post
    does blue smoke coming from the exhaust mean my piston rings are gone?i just got the thing turboed and was thinking its because i havnt got a 2 bar map sensor in there so fuel isnt mixing right but i could be wrong any help would be apreciated thanx
    if i read right you havent done the AFR settings, if so it's very possable
    youv'e burned the rings. (lucky not to have holed the piston's)
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    in that case rip her out pull out the pistons hone the bores and change the rings

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    Quote Originally Posted by burnz View Post
    if i read right you havent done the AFR settings, if so it's very possable
    youv'e burned the rings. (lucky not to have holed the piston's)
    whats the afr settings?

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    so you think its definatly the rings?if so im just gunna rip this turbo kit off and sell the kit ahh!

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    possibly the turbos seal is gone and is burning oil

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    Quote Originally Posted by VL Berlina 5speed View Post
    possibly the turbos seal is gone and is burning oil
    turbo seal?howwould i find out if thats blown?

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    you'll see oil leaking out the back of the turbo if its what i'm thinking ov, or you'll see oil in your intake pipe from the turbo, thats what iv found on turbo diesel engines anyway.

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    all you can possibly be sure about atm is oil is most likely getting into the combustion chamber.

    Could be rings, valves, pcv valve, the turbo thingo.

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    A few questions for you to analyse the possible cause of the problem.
    1. Have you done a compression test to see if any cylinder is down on compression? Simple enough to do and it will either locate or eliminate rings and valves.
    2. What condition leads to the smoke blowing" Is it under accelleration from a take off, or at the bottom of a hill when you have driven down under brakes or with the accellerator off" 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 suddently when you accellerate. This causes a fair bit of smoke to be noticed until the excess is burnt off. Valve stem seals are reasonably easy and cheap to replace.
    3. If the smoke is coming out in "puffs", it indicates broken rings or holed piston. Big clouds at all times means pull the motor for a full rebuild. If you bunged a turbo on a high mileage engine, you probably should have rebuilt the engine first anyway.
    4. Remove and clean PC valve. It could be clogged and can affect oil consumption.
    5. As mentioned above, check for buggered seal in the turbo. Was the turbo in good condition when you installed it (ie new/near new?) It could be a faulty seal from the manufacturer.

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    Quote Originally Posted by VYII BERLINA View Post
    3. If the smoke is coming out in "puffs", it indicates broken rings or holed piston.it (ie new/near new?) .
    you'll see puffs coming out the oil filler hole as well if you have a serious piston ring failure or holed piston.

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    umm ok yea the motor had 320 00 on the clock,the smoke doesnt happen all the time its when you really put you foot down and then change gears,im not the mechanically minded so thats why i asked on here cause i cant really afford to keep pooring money into this car.umm to answer your question the turbo was new but i do know that the oil hydraulic hose going from the turbo to the actual engine was gone(had kinks in it)and ive been told to replace it,so ive barely driven the car hard only just putted around in low gears,but i didnt mention that hydraulic hose because it didnt occur to me that that could be the problem..also very recently i just changed the rocker cover gaskets cause they were both blown badly so now its not leaking oil like it used to.

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    Quote Originally Posted by commsirac View Post
    you'll see puffs coming out the oil filler hole as well if you have a serious piston ring failure or holed piston.
    so the car will still drive if the piston ring is broken ?or the rings are gone?seems to be driving fine and doesnt make any weird noises

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    Quote Originally Posted by tr11py View Post
    umm ok yea the motor had 320 00 on the clock,the smoke doesnt happen all the time its when you really put you foot down and then change gears,im not the mechanically minded so thats why i asked on here cause i cant really afford to keep pooring money into this car.umm to answer your question the turbo was new but i do know that the oil hydraulic hose going from the turbo to the actual engine was gone(had kinks in it)and ive been told to replace it,so ive barely driven the car hard only just putted around in low gears,but i didnt mention that hydraulic hose because it didnt occur to me that that could be the problem..also very recently i just changed the rocker cover gaskets cause they were both blown badly so now its not leaking oil like it used to.

    are you putting boost into your crank-case? did at any stage modify the hose that goes from the intake manifold to the throttle body??

    have you replaced that kinked oil line yet? - i''m guessing this is the oil return line from the turbo that needs to be nice fat and free-flowing. if it's kinked/blocked, you won't be able to drain the oil from the turbo properly, and it will flow out the front/rear seals (and you'll get burnt oil out the zorst).

    check your cooler/intake piping for oil and let us know how you go.

    yes the car might drive fine with busted rings, but I reckon it would puff oil constantly - like those dunger magnas you see driving around everywhere with constant smoke.

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    Quote Originally Posted by tr11py View Post
    so the car will still drive if the piston ring is broken ?or the rings are gone?
    Yes it will drive.....but not well....and lots of oil consumption....limped one home 400km with a holed piston once upon a time.......

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    what would be the best work around for the vacume hose from the inlet manifold to the TB for a turbo setup?

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    Quote Originally Posted by DannyboyDS View Post
    what would be the best work around for the vacume hose from the inlet manifold to the TB for a turbo setup?
    dunno about 'best' but easiest would be to plumb the hose from the intake manifold into a vented oil catch can, and block off the throttle body end.

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    that hose off the throttle body is still connected?should i be blocking it off or something?

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    you said that you dont have mechanical knowlege but fitted a turbo.
    did you decompress the motor, what boost are you running, has it got a waste gate????
    this sound liker it's going to get real expensive real quick.
    take you car to someone who knows what they are doing!!!
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    Even in our sleep we happen to be right.
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    Quote Originally Posted by burnz View Post
    you said that you dont have mechanical knowlege but fitted a turbo.
    did you decompress the motor, what boost are you running, has it got a waste gate????
    this sound liker it's going to get real expensive real quick.
    take you car to someone who knows what they are doing!!!
    i know small amounts about cars not much,i took it to a performance place in marrickville sydney to install it i didnt do it myself,yea it does have a wastegate,6 pound boost,i dont think the motor got decompressed?i dont know

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    You boght a cheap ebay chinese turbo basically mate...it's going to blow oil like a son of a gun...the oil is most likely going to be coming from the seals in the turbo.

    Check to see how much oil is in your intercooler.
    You put you left foot in, your put your right foot in , you take your left foot out and you slide it all about!

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    I didn't think you needed to lower compression on a stock engine for low boost?

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