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  1. S

    Kenworth Cummins 871 High Crankcase Pressure smoking

    I was told yes it has, and it was taken 15hrs out of town to get custom tuned because the delete. Not sure if that is true, but did run good for 120hrs since I've bought it. Until a couple days ago, then noticed alot of oil burning smoke from crankcase vent, also some coolant loss it appears...
  2. S

    Kenworth Cummins 871 High Crankcase Pressure smoking

    It is a 871 Cummins Isx15, 2009.
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    Kenworth Cummins 871 High Crankcase Pressure smoking

    Good day readers, Another issue with my truck that I purchased a month 1/2 ago, a couple days ago when I was driving home empty I noticed some severe white smoke behind me in the mirrors, once I got home I checked and noticed it was just pouring out of the crankcase breather vent. Oil...
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    Kenworth t800 09 air valve problems

    Awesome thanks so much again! So in order to replace check valve on these, I shall replace the whole unit (governor aswell?) I think I'll start with this and a R12 vertical for now and see where I end up, definitely will slow minor leaks in those areas, not sure about the entire system tho...
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    Kenworth t800 09 air valve problems

    This looks like the governor/check/release valve on my air dryer? Is this the correct part, would help alot in preventing back flow to compressor I would think?
  6. S

    Kenworth t800 09 air valve problems

    Those issues stated above is why my pressure drops from 120-50 in about 2 hours of sitting after further investigation. Can't notice the leaks while operating, but definitely the slight leaking sound when walking around at engine off, still drives me nuts. Tomorrow trying to get a R12 vertical...
  7. S

    Kenworth t800 09 air valve problems

    You rock! Thanks so much for your help. Some of those leveling valves look a tad different but same part #? I can't seem to see this part on any new ones I found online. Sorry total noob here when it comes to air system. Also what is this valve? Under cab right where I sit essentially...
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    Kenworth t800 09 air valve problems

    I went over it again with a soap sprayer, they never tightened the main air line enough coming into the treadle valve, heard quite a leak/bubbles there, got almost another turn out of that fitting, not audible anymore, but still see the odd bubble tho the angle the line comes in I am not...
  9. S

    Kenworth t800 09 air valve problems

    Awesome thank you so much! I really have to work over these failing air valves on this rig. And what kind of leveling valve is this? On the left side of the frame between tandem axles aswell. Thanks in advance
  10. S

    Kenworth t800 09 air valve problems

    Here we go figured it out. Thank you.
  11. S

    Kenworth t800 09 air valve problems

    [/url][/IMG] Can't seem to make them come through.
  12. S

    Kenworth t800 09 air valve problems

    Hi, New owner operator here and I've had the truck at the shop a couple weeks already and being littered with bills. Its a kenworth t800 2009. I just had my treadle valve replaced on the weekend, and have been testing the air system if it is holding air. I came across another small leak and...
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