1995 GSX occasional white smoke from idle to acceleration

Posted by dfresh702, Jun 14, 2011
Newbie Forum - Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum.

  1. dfresh702

    dfresh702 Proven Member

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    I have a 95 GSX. 6 bolt, according to receipts, was rebuilt 5-10k miles ago. Intake, exhaust, FMIC, motor mounts, 15-16 psi boost (im guessing something was done to up the boost, just dont know what) upgraded flywheel, walbro fuel pump, EGR valve removed / blocked. She runs great, all of the time. Occasionally, after idling at a red light, and as soon as i accelerate, a puff of white smoke will shoot out. It only happens during that timeframe. Under full boost, no issues, good to go. I have read many a blog on here, and some say its the valve stem seals, but only if it does it when its cold. And the turbo seals would shoot out smoke under WOT. It doesnt do it when its cold or WOT.. only after idling. I do have a CEL light on for the non-existent EGR valve. Just changed the oil, changed the valve cover gasket, flushed coolant fluids, etc. How exactly do i check for turbo shaft play? and if i upgraded to a 14B, would there have to be any tuning involved? Any suggestions?

    I forgot to mention, that i also replaced the PCV valve with a new one.
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  2. XiKeiyaZI

    XiKeiyaZI Supporting Member

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    Valve Stems Leak Oil.
    Oil burns Blue.
    Coolant Burns White.

    There are a plethora of things that could cause this. What you first need to do is a compression and Leakdown test. Do your coolant Levels Drop at all over a certain amount of time? Have you ever ran hot? What does the smoke smell like? Do you smell any odd smells at all?

    We're talking pushing fluids into your combustion chambers during acceleration all the way to a cracked housing in your turbo. (Long, detailed event that's nearly unbelievable).
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  3. dfresh702

    dfresh702 Proven Member

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    I would say blue smoke, oil. Doesnt run hot at all ever since I had the radiator flushed.. i did notice it ran a bit hot while traveling up longer than normal hills, etc.. but not anymore... compression test = get the tool, take out the spark plugs, and pressurize it right? The smoke smells verrrry bitter like... The previous owner used a synthetic oil blend.. I changed it to full synthetic.. Stupid decision? i noticed after changing to synthetic that the exhaust smelled quite a bit different. Verrrry bitter
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  4. XiKeiyaZI

    XiKeiyaZI Supporting Member

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    http://www.dsmtuners.com/forums/articles-engine-fuel/338152-compression-leak-down-testing.html

    http://www.dsmtuners.com/forums/articles-engine-fuel/336535-do-you-have-blown-head-gasket.html

    These should help you out. The Headgasket one is just for reference if it were coolant.

    If it's blue smoke and only at idle but goes away during acceleration/driving then it's most likely just bad valve seals
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  5. dfresh702

    dfresh702 Proven Member

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    Thank you very much for your insight into this issue. Much appreciated.

    once those 2 tests are complete, i will post the results.
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  6. XiKeiyaZI

    XiKeiyaZI Supporting Member

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    :thumb: Good man.
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  7. dfresh702

    dfresh702 Proven Member

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    LOL ok. Im gonna stop trying to be MR MECHANIC guy, and take the car to a shop. Even though they charge 100 freaking dollars for a compression test, its probably cheaper than me blowing up my engine doing this simple task. Because if the guage said 60 PSI all the way across, either my engine is gone, which i highly highly doubt, or i didnt do it right. results tomorrow. :(
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  8. dfresh702

    dfresh702 Proven Member

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    I don't think I did it correctly.. It runs extremely smooth and strong. Could my compression be that jacked and it still runs amazing?
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  9. datbmac

    datbmac Proven Member

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    Not likely your car needs the right amount of compression to get the right amount of performance out of the fuel.
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  10. dfresh702

    dfresh702 Proven Member

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    I've also read smoke from exhaust sometimes means oil in the intercooler. If so, I'm willing to try to clean it. Soap and water? Nething special?
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  11. iugrad92turbo

    iugrad92turbo Proven Member

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    Soap i use kersosne, smoke like that hg, turbo, rings several things do a compression test.
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  12. dfresh702

    dfresh702 Proven Member

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    Yah. Pray for me LOL. Taking it to a professional tomorrow. I'll post results tomorrow
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  13. SD99GST

    SD99GST Proven Member

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    I had the same white smoke issue at one point, turned out it was the valve stem seals. If you do them, make sure you buy some good ones, if not the problem is likely to come back in the near future. I have heard from people that warming the car up before driving off can help maintain strong valve stem seals, but like almost everything I can hear two sides to the story.

    I would redo the compression test, look up on the site as to exactly what to do to perform this test, its really simple if you have any mechanical skills whats so ever. Good luck buddy.:hellyeah:
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  14. kowalczyk89

    kowalczyk89 Probationary Member

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    conventional oil will give you a blueish smoke but with full synthetic it can give more of a white smoke
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  15. dfresh702

    dfresh702 Proven Member

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    Thanks for your insight.. Hopefully the guys I'm taking it to know their stuff n don't try to BS me. Thanks again man.
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  16. XiKeiyaZI

    XiKeiyaZI Supporting Member

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    A compression test is pretty simple. Why not do it yourself? Did you have trouble performing it?
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  17. dfresh702

    dfresh702 Proven Member

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    I tried myself a couple of times buy became frustrated when it read 60 psi exactly for every cylinder. I even recorded the session pointing my camera at the gauge each time to make sure I wasn't losing my mind. I also thought it could have been a faulty gauge? The MFI circuit thing is located in the cluster of fuses under the hood right? Also, the coil plug thing is very close to the injectors right?

    I tried myself a couple of times buy became frustrated when it read 60 psi exactly for every cylinder. I even recorded the session pointing my camera at the gauge each time to make sure I wasn't losing my mind. I also thought it could have been a faulty gauge? The MFI circuit thing is located in the cluster of fuses under the hood right? Also, the coil plug thing is very close to the injectors right? I watched a vid on YouTube and the guy took his injectors out. Necessary?
    #17
  18. XiKeiyaZI

    XiKeiyaZI Supporting Member

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    2G's don't have the same fuses as a 1G. Here's what you can do - After you have your plugs out and the compression tester secure in one of the cylinders...

    1 : Unplug the clip from each injector
    2 : Unplug the coil pack - This is what your spark plug wires are connected to
    3 : Get in the car and push the gas pedal to the floor
    4 : Crank over 3-5 times
    5 : Get out and record readings for that cylinder.
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  19. dfresh702

    dfresh702 Proven Member

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    Ok will do. Question.. will not unplugging the injectors / not unplugging the coil have any effect on the compression test?
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  20. XiKeiyaZI

    XiKeiyaZI Supporting Member

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    Yes. It will cause your injectors to spray fuel into your cylinder. :p Do you want to wash your cylinder walls?
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  21. dfresh702

    dfresh702 Proven Member

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    Compression test results:

    130-135 across the board

    Leak down test results:
    Good across the board

    Turbo checked for leaks, none found

    White smoke remains.. Scheduling appointment to remove the head and replace anything that looks jacked up. Thanks for all the advice! Hopefully no more plumes of smoke LOL.
    #21
  22. sharkbait689

    sharkbait689 Proven Member

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    My car has a small oil leak and burns oil periodically (very little, not enough to fix) and on the bottom of the oil cap there will sometimes be white...stuff... where the oxygen leaked in or something. Also, after driving, burnt oil has a very distinct smell.
    #22

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