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Thread: smoke'n

  1. #21
    Join Date
    Dec 2002
    Location
    Teton Valley, Idaho
    Posts
    1,873

    Default

    Would a PCV system gone awry cause the smoke? Maybe a bad pcv valve on one of the valve covers is allowing too much crankcase air to be pulled into the intake manifold?

  2. #22
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,573

    Arrow

    Quote Originally Posted by rapidoxidationman View Post
    Would a PCV system gone awry cause the smoke? Maybe a bad pcv valve on one of the valve covers is allowing too much crankcase air to be pulled into the intake manifold?
    No closed PCV system. Road draft tube.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  3. #23
    Join Date
    Jan 2006
    Location
    South Milwaukee, WI
    Posts
    245

    Default

    As JK mentioned, the smoke is now extremely heavy, with the engine hot and at idle. I see nothing once I'm up to traveling speed. Oil pressure appears normal. I've purchased the injectors and new feed tubes. That job will be starting soon.

    As for the oil consumption, I may be all wet on this one and caused a false alarm-
    According to one of the dealership techs, the proper method for checking the oil is to get the engine up to temperature, shut the engine off and allow it to sit for 5 minutes- THEN check the oil. Usually, I had been checking the oil using this method or, cold before starting the engine in the morning. For whatever reason, I recently changed the method I had been using, by starting the engine "cold" in the morning (to get the oil pressure up), allowing it to run for a minute or two, and then checking the oil. If the tech is correct, I've just created a false reading! My bad- probably have been over filling it lately.

    I'll check the oil level using the method recommended by the tech for the next few weeks to see if there is any further loss noted. Sorry if I wasted your time!
    "Chessy56"
    So. Milwaukee, WI
    '01 2500HD, LB7, ~440K miles
    "Stock" engine. Dual fuel filtration system with Kennedy lift pump, BF Goodrich Commercial T/A Traction tires (sold to a dude from Texas- it's living a warmer life just fine down there now!).

    '17 2500HD, L5P (Happy Birthday/Merry Christmas to me!!!) Currently bone stock, 120K miles.

    "Socialism is a philosophy of failure, the creed of ignorance and
    the gospel of envy. Its inherent virtue is the equal sharing of misery."
    Winston Churchill

  4. #24
    Join Date
    Mar 2000
    Location
    Loyal WI US
    Posts
    10,792

    Default

    I use the cold level check method. Temp not a huge concern so long as it has had adequate time for the oil to drain to pan.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  5. #25
    Join Date
    Jan 2006
    Location
    South Milwaukee, WI
    Posts
    245

    Default

    With the engine "cold", I can clearly see that my oil level is well above the limit and will have to have some drained after I'm done with the injector replacement.

    I am noticing that the tips of my injectors are heavily caked with carbon. DMaxMav stated that I shouldn't be getting oil into the cylinders as they are pressurized by the turbo. So, then am I to believe they are that carboned from the fuel seeping past the needle/seat? Being that the injector tips are highly carboned, I'm wondering if my valves are experiencing the same buildup? (Just had the heads rebuilt a few months back with the head gasket change).

    I've read on several web sites that Cefoam will help dissolve carbon buildup- so I'm wondering if it would help any if I dumped a can into the fuel once I get this truck back up and running? Or, perhaps som FPPF would help remove any carbon deposits?

    Anyone with any experiences/observations on this?
    "Chessy56"
    So. Milwaukee, WI
    '01 2500HD, LB7, ~440K miles
    "Stock" engine. Dual fuel filtration system with Kennedy lift pump, BF Goodrich Commercial T/A Traction tires (sold to a dude from Texas- it's living a warmer life just fine down there now!).

    '17 2500HD, L5P (Happy Birthday/Merry Christmas to me!!!) Currently bone stock, 120K miles.

    "Socialism is a philosophy of failure, the creed of ignorance and
    the gospel of envy. Its inherent virtue is the equal sharing of misery."
    Winston Churchill

  6. #26
    Join Date
    Mar 2000
    Location
    Loyal WI US
    Posts
    10,792

    Default

    I wouldn't expect any buildup on the intake valves as they are dry flow, and the exhaust valves generally run hot enough to remain clean.

    Combustion efficiency could help the carbon as well as working the truck a bit. Regular use of FPPF should help-to a point.

    I think the simplest solution is to start fresh with the injectors/lines and drive it.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  7. #27
    Join Date
    Jan 2006
    Location
    South Milwaukee, WI
    Posts
    245

    Default No more smoke

    Been a while since I last visited the site- just an update:
    The injectors were the problem. Despite the acceptable PW commands and balance rates, the smoke was indeed injectors- must have been seeping as JK suggested. I replaced them myself this time (with new pipes) and saved some $$$- no more smoke. Disassembly/reassembly not too big of an issue (about 8 hours each way)- but PITA when the dealership tech rounds out the cap screws on the valve covers to the point where vice grips are needed!!!

    Not seeing a big issue with oil consumption either- false alarm on that one. No coolant/water/fuel in the oil based on lab test.

    Still have a "ticking" noise from the right-hand side of the engine- and an exhaust leak around the down pipe to exit pipe connection. Flange of the down pipe is heavily eroded. Sealers and other such junk won't cure it and the erosion is too big to let soot build up plug it. Living with it.

    Thanks for the help guys!
    "Chessy56"
    So. Milwaukee, WI
    '01 2500HD, LB7, ~440K miles
    "Stock" engine. Dual fuel filtration system with Kennedy lift pump, BF Goodrich Commercial T/A Traction tires (sold to a dude from Texas- it's living a warmer life just fine down there now!).

    '17 2500HD, L5P (Happy Birthday/Merry Christmas to me!!!) Currently bone stock, 120K miles.

    "Socialism is a philosophy of failure, the creed of ignorance and
    the gospel of envy. Its inherent virtue is the equal sharing of misery."
    Winston Churchill

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