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Wastegate line on MBN??

Discussion in 'Trucks [ Eighteen Wheelers ]' started by SHC, May 5, 2011.

  1. May 5, 2011 #1
    SHC

    SHC Spoiled Rotten Brat O/O

    8,484
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    Feb 26, 2011
    Westville, IN
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    So today I was looking the truck over as I have my annual DOT on Monday, and found that the wastegate hose has split in two. Now I have only had this truck for a month, so what problems would this have caused as far a drivability? I have noticed that the truck had a very loud turbo/whine and that the boost would only build to about 25psi. Would this have also caused some bad MPG #'s???
     
    SHC, May 5, 2011
    SHC, May 5, 2011
    #1
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  3. May 5, 2011 #2
    droy

    droy Heavy Load Member

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    Jun 11, 2008
    Iowa, LA
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    If your ECM is stock, I'm surprised your yellow "check engine" light isn't on. That split hose will usually throw a code, and may even cause engine to "de-rate"

    on an MBN, boost is usually around 28-30psi. Replace hose with Cat, or dealer part; (the others don't seem to last as long). Boost may come up a little after replacement, but ECM is designed to hold boost to 32psi max, IIRC. Whatever you do, DO NOT pinch off hose for more boost.
     
    droy, May 5, 2011
    droy, May 5, 2011
    #2
  4. May 6, 2011 #3
    SHC

    SHC Spoiled Rotten Brat O/O

    8,484
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    Feb 26, 2011
    Westville, IN
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    Makes sense. Last week I came hard off a light and was into full boost when the "CE" light came on and derated the motor. Also, it would pop on every now and then when I would fire it up but only that one time when I was driving it..... anyways, I replaced it with the best hose I could get till I can get the correct CAT hose which was high-pressure fuel line from NAPA (just as thick, just not teflon) so i think it should hold till my dealer gets the hose in for me.
     
    SHC, May 6, 2011
    SHC, May 6, 2011
    #3
  5. May 6, 2011 #4
    oneshot

    oneshot Medium Load Member

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    Feb 28, 2009
    mississippi
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    U can wrap the hose with aluminum foil,and it will last a long time.Heat is what kills the hose.
     
    oneshot, May 6, 2011
    oneshot, May 6, 2011
    #4
  7. May 7, 2011 #5
    SHC

    SHC Spoiled Rotten Brat O/O

    8,484
    7,044
    Feb 26, 2011
    Westville, IN
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    I have it wrapped in fire-resistand liner my brother brought me from US Steel. It is rated to +1000*f so I think it is all ok now LOL
     
    SHC, May 7, 2011
    SHC, May 7, 2011
    #5
  8. May 12, 2011 #6
    oneshot

    oneshot Medium Load Member

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    Feb 28, 2009
    mississippi
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    LOL that should work.I've had the good red hose on mine for over a yr with aluminum foil with wiring tubing around it,and it'sstill good and not brittle.
     
    oneshot, May 12, 2011
    oneshot, May 12, 2011
    #6
    SHC Thanks this.
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