Boost leak when cold outside and climbing hills.

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

  1. mitmaks

    mitmaks Road Train Member

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    I have boost leak somewhere. Especially when it's cold outside ill start climbing a hill when I hear loud pfffttt and it looses power for split second. They sell those adapters that bolt onto turbo inlet. Do I need size 5" or bigger? Any better ideas to check for boost leak?
     
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  3. MTN Boomer

    MTN Boomer Heavy Load Member

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    Tighten the clamps on the boots on the air to air.
     
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  4. lester

    lester Road Train Member

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    Your symptoms don't sounds like a boost leak to me. Wouldn't just loose power randomly for a split second
     
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  5. mitmaks

    mitmaks Road Train Member

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    Already tried that. I think I have crack/pinhole on cac somewhere
     
  6. MTN Boomer

    MTN Boomer Heavy Load Member

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    Yes , would t be that simple would it?
     
  7. mitmaks

    mitmaks Road Train Member

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    What size pipe intake is it? Looks like4.5 inches? Or is it 5"
     
  8. God prefers Diesels

    God prefers Diesels Road Train Member

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    It should be a constant leak then. It really sounds like the EGR valve is getting forced open, and that noise you're hearing is turbo bark from air rushing back into the turbo after lack of drive pressure under load. Which engine do you have, and what year?
     
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  9. mitmaks

    mitmaks Road Train Member

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    Its 2013 isx15.
     
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  10. God prefers Diesels

    God prefers Diesels Road Train Member

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    Might also check out Rawze.com too, if you haven't.
     
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  11. Goodysnap

    Goodysnap Road Train Member

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    Smoke.

    Once you buy a smoke machine you will throw the pressure test adapters in the garbage. Just hook it up and sit back and watch.

    Plus it finds the smallest of leaks.

    Theres tons on the market. Most commonly used in automotive evap system testing.
     
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