MX bpv/boost issue

Discussion in 'Kenworth Forum' started by Tankeryanker35, Jan 4, 2020.

  1. Tankeryanker35

    Tankeryanker35 Bobtail Member

    11
    1
    Jul 4, 2019
    Holden, MO
    0
    Is the bpv serviceable?

    I ask because I hate to drop several hundred dollars on a new bpv when all that is wrong is a broken spring. No codes.

    Truck gets along, though it sounds like it's working harder but seems to have a slight power loss. I'm also not getting the residual power/boost between shifts (lags when getting back onto the throttle) and I am hearing the MX boost farts much more often. I suspected a boost leak but the only thing I've seen is the spring on the BPV shaft is broken...this is assuming I'm looking at the right thing, its the actuator/valve on the exhaust side, just behind the turbo.

    I have no boost gauge right now so I can't verify a boost leak or derate. I have watched this valve dance during an unload (1000rpm with engine warm) so I'm assuming it has an effect on boost control. I'm mechanically inclined but diesel engines are not my forte.

    Truck is a 14 T660.

    Thoughts? Am I even in the correct forum?
     
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  3. pushbroom

    pushbroom Road Train Member

    1,618
    6,575
    Sep 1, 2012
    0
    Spring for the BPV is serviceable. Whats the last 8 of the truck s/n.
     
    spsauerland Thanks this.
  4. pushbroom

    pushbroom Road Train Member

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    6,575
    Sep 1, 2012
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    BPV spring kit is p/n 2107530 (#1)
    Lever is 2154098 (#2)

    iexplore_s2sUuMbTLY.jpg
     
  5. Tankeryanker35

    Tankeryanker35 Bobtail Member

    11
    1
    Jul 4, 2019
    Holden, MO
    0
    Thank you, thank you! I've been looking for about 6 hours for that! The internet is great when you're not searching for something important I guess, LOL.

    I asked one of our shop techs about it as I was leaving today and got a funny look, that was my first "oh no" moment. I was reluctant to call the dealership thinking they would try to sell me the whole valve, or bring it in for a warranty repair and then tell me it isn't covered).

    Doing my PM next weekend, gonna try to limp it through the week, if I can stand it.

    Thank you much!
     
  6. jland1962

    jland1962 Bobtail Member

    35
    38
    Aug 15, 2018
    0
    I just got my tMX out of the shop where the turbo had to be removed to get to and unrelated part.It too has been farting much more often than before.
     
  7. spsauerland

    spsauerland Road Train Member

    3,449
    8,801
    May 31, 2010
    West Harrison, In
    0
    Just an F.Y.I., they will not or at least six months ago when I tried they will not sell the rod(lever). Needle bearing took a crap and only service option was new BPV.
     
    pushbroom Thanks this.
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