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Exhaust leak?

Discussion in '6.9L IH & 7.3L IDI Diesels' started by Joe Martin, Jan 14, 2019.

  1. Joe Martin

    Joe Martin Registered User

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    94 7.3 factory turbo. When in overdrive sounds like a terrible exhaust leak above 2000 rpm. If I'm in neutral and rev it to 2000 rpm I never hear it. Could this possibly be something else? I have replaced the pump and injectors. Also I have an oil leak that will not go away. 2 rear mains and an intake manifold gasket and still leaks.
     
  2. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    Use a flashlight and look over all the connections for soot, if you have a leak it should show it
     
  3. 79jasper

    79jasper Chickenhawk

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    Stick a leaf blower in the exhaust.

    Sent from my SM-N960U using Tapatalk
     
  4. DrCharles

    DrCharles Full Access Member

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    Does that work? I know it'll make plenty of air, but how would you hear the hiss from the leak over the racket the leaf-blower makes? :dunno
     
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  5. 79jasper

    79jasper Chickenhawk

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    Yup. Just make sure to seal the blower to the exhaust. (And secure it in place)

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  6. Oledirtypearl86

    Oledirtypearl86 Full Access Member

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    What about possibly blowing soot and crap in the exhaust into the motor where some of the valves would be open
     
  7. 79jasper

    79jasper Chickenhawk

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    Oh boy.........
    If you have anything like that in the exhaust in the first place, you have bigger worries......

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