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Wastegate

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by lwlevens, Jun 21, 2018.

Page 2 of 5
  1. Jun 22, 2018 #11
    lwlevens

    lwlevens Medium Load Member

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    I'm sure it's stock... Well hopefully the wastegate was open the whole time.
     
    lwlevens, Jun 22, 2018
    lwlevens, Jun 22, 2018
    #11
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  3. Jun 22, 2018 #12
    AModelCat

    AModelCat Road Train Member

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    Believe it or not, plugging off the wastegate gives you less power in a lot of cases with an electronic engine. The ECM will see that boost is higher than it should be and assume its due to over-fueling. A mechanical engine is a different story though.
     
    AModelCat, Jun 22, 2018
    AModelCat, Jun 22, 2018
    #12
    daf105paccar Thanks this.
  4. Jun 22, 2018 #13
    Cam Roberts

    Cam Roberts Road Train Member

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    His wastegate is stuck open it sounds like. If you decide you want to keep the wastegate actuator hooked up, remove the hose and blow shop air through to verify it is working properly and verify that it is not leaking air. Those diaphragms inside go bad causing a boost leak
     
    Cam Roberts, Jun 22, 2018
    Cam Roberts, Jun 22, 2018
    #13
  5. Jun 22, 2018 #14
    lwlevens

    lwlevens Medium Load Member

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    Cam, I'm sure this was blocked off for a long time and I'm sure the wastegate is frozen so I'll try to heat it up to break it loose hopefully it will free up,when I get back home.Is there any kind of o rings in inside don't want to melt anything with the torch heat.
     
    lwlevens, Jun 22, 2018
    lwlevens, Jun 22, 2018
    #14
  7. Jun 22, 2018 #15
    Cam Roberts

    Cam Roberts Road Train Member

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    No orings in there.
     
    Cam Roberts, Jun 22, 2018
    Cam Roberts, Jun 22, 2018
    #15
  8. Jun 22, 2018 #16
    lwlevens

    lwlevens Medium Load Member

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    Thanks
     
    lwlevens, Jun 22, 2018
    lwlevens, Jun 22, 2018
    #16
  9. Jun 22, 2018 #17
    lwlevens

    lwlevens Medium Load Member

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    So what if the wastegate is closed.
     
    lwlevens, Jun 22, 2018
    lwlevens, Jun 22, 2018
    #17
  10. Jun 22, 2018 #18
    Cam Roberts

    Cam Roberts Road Train Member

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    Then you don’t have a major boost leak at the turbo.
     
    Cam Roberts, Jun 22, 2018
    Cam Roberts, Jun 22, 2018
    #18
  11. Jun 22, 2018 #19
    lwlevens

    lwlevens Medium Load Member

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    Then the truck is just slow. Maybe I can turn it up a little.
     
    lwlevens, Jun 22, 2018
    lwlevens, Jun 22, 2018
    #19
  12. Jun 22, 2018 #20
    Cam Roberts

    Cam Roberts Road Train Member

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    Shouldn’t be. You need a boost gauge in order to know where to start looking
     
    Cam Roberts, Jun 22, 2018
    Cam Roberts, Jun 22, 2018
    #20
    Roger McG Thanks this.
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