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3406b low boost and fuel pressure issues

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by rs72z, May 28, 2022.

Page 4 of 8
  1. Jun 1, 2022 #31
    rs72z

    rs72z Bobtail Member

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    Oct 7, 2021
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    Please educate me some more.
    Talking with the mechanic at work, and mentioned what you said about the gasket between the ports on manifold under turbo being blown. He said that aftermarket gasket don't even have the gasket in the middle. Also this is a Full Tilt ceramic manifold if that makes any difference.
    I haven't had a chance to check any of the things you ask me to check yet hopefully this weekend.
    Thanks
     
    rs72z, Jun 1, 2022
    rs72z, Jun 1, 2022
    #31
    Another Canadian driver Thanks this.
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  3. Jun 1, 2022 #32
    wore out

    wore out Numbered Classic

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    Then he is using the wrong gaskets.
     
    wore out, Jun 1, 2022
    wore out, Jun 1, 2022
    #32
    Another Canadian driver Thanks this.
  4. Jun 3, 2022 #34
    rs72z

    rs72z Bobtail Member

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    Oct 7, 2021
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    @wore out
    Check throttled opening this morning and it wasn’t moving breakover portion of lever at all. Adjusted it as far as I could and got it to move half way. It moved idlefrom 650 to 800 doing this, couldn’t get enough adjustment otherwise. I may have something wore out on the linkage.
    So what does breakover portion of throttle do?
     
    Last edited: Jun 3, 2022
    rs72z, Jun 3, 2022
    rs72z, Jun 3, 2022
    #34
    Another Canadian driver Thanks this.
  5. Jun 4, 2022 #34
    Another Canadian driver

    Another Canadian driver Road Train Member

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    I would have changed the intake manifold temperature sensor.
    Like yesterday. To start with.
     
    Another Canadian driver, Jun 4, 2022
    Another Canadian driver, Jun 4, 2022
    #34
  7. Jun 4, 2022 #35
    wore out

    wore out Numbered Classic

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    CHASIN THE DEVIL'S HERD
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    Wouldn’t help it I assure you
     
    wore out, Jun 4, 2022
    wore out, Jun 4, 2022
    #35
    Another Canadian driver and Oxbow Thank this.
  8. Jun 4, 2022 #36
    wore out

    wore out Numbered Classic

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    CHASIN THE DEVIL'S HERD
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    Break over holds pressure on the govnor spring. There’s a fine line on adjustment you gotta take the 3/8 bolt out and move the lever 1 hole then adjust your linkage. After a few tries you’ll finally find something that will work
     
    wore out, Jun 4, 2022
    wore out, Jun 4, 2022
    #36
    Another Canadian driver, rs72z and Oxbow Thank this.
  9. Jun 4, 2022 #37
    Another Canadian driver

    Another Canadian driver Road Train Member

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    Sorry to hear that.
    Great engine, but fussy, sometime.
     
    Another Canadian driver, Jun 4, 2022
    Another Canadian driver, Jun 4, 2022
    #37
  10. Jun 4, 2022 #38
    rs72z

    rs72z Bobtail Member

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    Oct 7, 2021
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    Does a mechanical cat have intake air temp sensor? If so why and what purpose? Just trying to learn?
     
    Last edited: Jun 4, 2022
    rs72z, Jun 4, 2022
    rs72z, Jun 4, 2022
    #38
    Another Canadian driver Thanks this.
  11. Jun 4, 2022 #39
    spsauerland

    spsauerland Road Train Member

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    No
     
    spsauerland, Jun 4, 2022
    spsauerland, Jun 4, 2022
    #39
    Another Canadian driver and Oxbow Thank this.
  12. Jun 4, 2022 #40
    rs72z

    rs72z Bobtail Member

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    Oct 7, 2021
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    I couldn’t imagine why it would.
     
    rs72z, Jun 4, 2022
    rs72z, Jun 4, 2022
    #40
    Another Canadian driver Thanks this.
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