Boost leak when cold outside and climbing hills.

Discussion in 'Trucks [ Eighteen Wheelers ]' started by mitmaks, Apr 19, 2021.

  1. nikmirbre

    nikmirbre Road Train Member

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    @Goodysnap

    Can you provide a leak to a good smoke machine?
     
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  3. Goodysnap

    Goodysnap Road Train Member

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    Smoke Pro® Total Tech®

    This is the the one we have in the shop.The inflatable bladders are really nice and give a spot to enter the smoke.
     
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  4. mitmaks

    mitmaks Road Train Member

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    1300 that's pricy. I have 100 one at home made out of paint can and hooks up to 12v and air compressor
     
  5. Goodysnap

    Goodysnap Road Train Member

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    Hey, grab a cigar and blow in a hose for all I care.

    But the smoke will find the leak.......fast.

    There are cheaper options out there......
     
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  6. mitmaks

    mitmaks Road Train Member

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    What would cause that?
     
  7. God prefers Diesels

    God prefers Diesels Road Train Member

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    I guess it just gets weak, and can't hold the valve closed anymore. Once it gets forced open, it dumps all your boost. Makes the turbo bark which is super hard on the shaft. Can even blow your induction off the front of the turbo, if the clamp isn't tight enough.

    I unplugged mine to narrow it down, and that stopped it. But I don't think you can do it without going into limp mode, or derate. I've got an older ISX.
     
  8. nikmirbre

    nikmirbre Road Train Member

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    What did you unplug?
     
  9. God prefers Diesels

    God prefers Diesels Road Train Member

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    The two-wire underneath the EGR valve. Turn on key for thirty seconds first. Then unplug it. After it cured my turbo bark, I knew my EGR was failing. It would bark at wide open throttle. It should only do that if you cut throttle at high boost. Never at full throttle, though.
     
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  10. mitmaks

    mitmaks Road Train Member

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    I think ill remove mine and try cleaning it. Probably carbon packed. New one is $1200
     
  11. nikmirbre

    nikmirbre Road Train Member

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    Yeah ive got a 12.7 and it started barking after coming off the fuel at high boost this week.....
     
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