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Thread: Excessive white smoke from*crank*case*breather*tube

  1. #1
    Join Date
    Jun 2016
    Location
    United States
    Posts
    81

    Excessive white smoke from*crank*case*breather*tube

    G'day all. Several weeks ago I replaced the head gasket on the 110 county and ever since I have noticed excessive white smoke coming out from the*crank*case*breather*tube. Otherwise the county seems to run fine the truck still seems to run fine. In the past, there has been a little smoke coming out the hose from time to time but now while it is idling, it does it all the time, with it often swirling around the front of the county when idling. Ran a compressi9n check and everything seemed to check out. Did I increase the pressure somewhere when the gasket was replaced? I've seen with other vehicles where a leaky tube drawing from the vacuum can impact this (when the hvac or other also depends on the vacuum), but that shouldn't be the case here. Anyone have experience with this or input to share I would greatly appreciate it as every time I stop I am reminded and worried. Thank you in advance.
    Scratching my teenage itch now that I'm in my midlife crisis...
    '87 110 County 4BD1+T+LP (Godzilla)
    '88 110 Perentie Cargo 4BD1+T+LP (Thing1)
    '91 110 Perentie Cargo 4BD1+T+LP (Thing2)

  2. #2
    Join Date
    Jan 2017
    Location
    Geraldton WA
    Posts
    1,858
    Is it smoke or is it water vapour ?
    You only get one shot at life, Aim well

    2004 D2 "S" V8 auto, with a few Mods

  3. #3
    Join Date
    Jun 2016
    Location
    United States
    Posts
    81
    The smoke dissipates like water vapor but I do have some residue from oils underneath in the drive.
    Scratching my teenage itch now that I'm in my midlife crisis...
    '87 110 County 4BD1+T+LP (Godzilla)
    '88 110 Perentie Cargo 4BD1+T+LP (Thing1)
    '91 110 Perentie Cargo 4BD1+T+LP (Thing2)

  4. #4
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    20,498
    White from engines usually means steam, which suggests something you did when replacing the head gasket is resulting in a small amount of water leaking via somewhere pretty hot into the crankcase. Wrong head gasket? cracked head? Head gasket not sealing properly due to incorrect tensioning or dirt?

    Anyone got other suggestions?

    Why was the head gasket replaced?
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  5. #5
    Join Date
    Oct 2012
    Location
    FNQ
    Posts
    1,328
    White smoke from diesels can be either unburnt diesel or steam.Unburnt diesel smoke usualy from the exhaust but not always.Our Isuzu truck suddenly started pushing white smoke out the breather at 82000k turned out to be a very small hole in the piston (manafacturing fault) If your problem is steam I would think by now you would have a nice sludgy build up in top of valve cover

    AM

  6. #6
    Join Date
    Jun 2016
    Location
    United States
    Posts
    81
    Thank you all. Pressure test all good and we saw nothing indicating a piston or ring issue, but from the posts above I may need a closer look soon. Just drove 1000km+ on a trip with no noted issues and no dramatic changes in fluids. As for head gasket material, would one material or another, all common, cause an issue and if so, what?
    Scratching my teenage itch now that I'm in my midlife crisis...
    '87 110 County 4BD1+T+LP (Godzilla)
    '88 110 Perentie Cargo 4BD1+T+LP (Thing1)
    '91 110 Perentie Cargo 4BD1+T+LP (Thing2)

  7. #7
    Join Date
    Jun 2006
    Location
    Hay Point
    Posts
    3,704
    It has to be blowby I reckon. They are a breathy motor at the best of times and force a fair bit of oil smoke out the breather. Maybe by changing the head gasket you have now increased the compression slightly and a bit more is leaking past the rings and into the crankcase or else you have been nursing/idling it too much. What sort of condition are your injectors in? Keep an eye on the oil/water levels and give it some hard work and see if there is any improvement. Other alternative is to fit a provent and redirect the fumes from the breather into the intake between the air filter and manifold.
    Cheers......Brian
    1985 110 V8 County
    1998 110 Perentie GS Cargo 6X6 ARN 202516 (Brutus)

  8. #8
    Join Date
    Jun 2016
    Location
    United States
    Posts
    81
    Well, after a total of ~3300kms over the past two weeks and checking all fluids daily (sometimes more) I experienced a loss in power and fearing the worst had a pressure test run showing two cylinders off and then pulled it apart. While it appeared there was enough oil and coolant in it, two cylinder sleeves are scored so it appears things heated up significantly at some point. As such, I find myself approaching a rebuild. In the next few weeks I'll pull the sleeves out to verify the short block doesn't have damage, but as I've not approached this before how realistic is it for me to do a rebuild myself? I've read here where everyone recommends using Isuzu rebuild kits, but I've not had much luck in locating one over the past few days - recommendations? In the event the short block is cracked, should I go the wrecker route to get one, work with one of the manufacturers in China making 4BD1's or some other route? Input appreciated for this as I've not approached this before and already feel like an idiot for the engine getting to this point given all the warning signs I had previously pointed out. thank you in advance for input and advice.
    Scratching my teenage itch now that I'm in my midlife crisis...
    '87 110 County 4BD1+T+LP (Godzilla)
    '88 110 Perentie Cargo 4BD1+T+LP (Thing1)
    '91 110 Perentie Cargo 4BD1+T+LP (Thing2)

  9. #9
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    20,498
    I look forward with interest to seeing how you go - I've never been there with the Isuzu; mine has only done 620,000km.
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  10. #10
    Join Date
    Jun 2016
    Location
    United States
    Posts
    81
    Ouch..... I know these should be good for 500k+ and believe the previous two owners took care of it well, though one can't be sure. I am extremely disappointed that this one has arrived where it has at ~200k total kms and have to believe something went wrong with the recent gasket replacement. Looking forward to any input from members to help me source appropriate kit and steps to proceed but won't be able to get to this for at least another two weeks.
    Scratching my teenage itch now that I'm in my midlife crisis...
    '87 110 County 4BD1+T+LP (Godzilla)
    '88 110 Perentie Cargo 4BD1+T+LP (Thing1)
    '91 110 Perentie Cargo 4BD1+T+LP (Thing2)

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