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07 acert mxs low boost

Discussion in 'Peterbilt Forum' started by showtimenga, Jul 5, 2015.

  1. Jul 5, 2015 #1
    showtimenga

    showtimenga Bobtail Member

    21
    2
    Apr 19, 2009
    douglas ga
    0
    hello all looking for a little guidance.. its a 07 acert mxs boost under a hard pull will reach about 20 and it sounds like a frigen vacuum under the hood like a loud blowing noise had one bellow leaking has a new cac .. thanks for any help
     
    showtimenga, Jul 5, 2015
    showtimenga, Jul 5, 2015
    #1
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  3. Jul 6, 2015 #2
    GrapeApe

    GrapeApe Road Train Member

    2,215
    2,203
    Jan 7, 2013
    0
    Sounds like a boost leak. Check all of your CAC hoses, turbo connections & bellows. I've seen a few of the upper turbo's come loose without a lot of soot showing an exhaust leak. Put a wrench on the nuts to be sure. I've also seen the short bellows between the turbo's crack quite a few times.
     
    GrapeApe, Jul 6, 2015
    GrapeApe, Jul 6, 2015
    #2
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