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Thread: TD42 Losing boost pressure

  1. #11
    The master farter
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    Quote Originally Posted by Hodge View Post
    Been locked down too long. Taking it for a drive and absolutely sink it. She'll boost in no time I reckon. lol
    Haha tried that.

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  3. #12
    Moderator MudRunnerTD's Avatar
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    Quote Originally Posted by Maxhead View Post
    Ö.anyone say Y62


    Sent from my iPhone using Tapatalk
    Me! Me! Me! It was Me!......
    Its a Nissan! =====> Its a Keeper!! ....... Got a TD42 in it BONUS!! ....... I'm a lucky bugger! I've got 2 of em!
    Check out my Toy --> MudRunnerTD's GQ From the Ground Up

    Quote Originally Posted by Rogue Dung Beetle View Post
    Wish it was Nissan though, Toyotas just can't keep up with the Pootrol pace.
    The only good thing about an 80 series is..... the front end?? Wrong!!, the Engine?? Wrong!! the Full Time 4WD system?? Wrong!! Its the NissanPatrol.com.au stubby holder fitted over the transfer lever.
    WARNING: Towballs used for recoveries can, and do kill people and damage property.

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    mudski (4th September 2021)

  5. #13
    Moderator MudRunnerTD's Avatar
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    Quote Originally Posted by mudski View Post
    Update.

    My Patrol is just sitting here. Lol.
    Boost controller is fine, so are all the hoses and the IC is fine. Changed out the fuel filter and it didn't help. Theres no gauze screen on the inlet line going into the pump. So its either the motor or injector pump. I assume. In lockdown so no rush.
    I would say yoy have a boost leak for sure. That explains the lack of boost and the black smoke as it is tuned for more boost so over feeling now. I woyld be tracing every boost hose looking for a split or blown hose . You may fine it just with the bonnet up and someone revving up the car.
    Its a Nissan! =====> Its a Keeper!! ....... Got a TD42 in it BONUS!! ....... I'm a lucky bugger! I've got 2 of em!
    Check out my Toy --> MudRunnerTD's GQ From the Ground Up

    Quote Originally Posted by Rogue Dung Beetle View Post
    Wish it was Nissan though, Toyotas just can't keep up with the Pootrol pace.
    The only good thing about an 80 series is..... the front end?? Wrong!!, the Engine?? Wrong!! the Full Time 4WD system?? Wrong!! Its the NissanPatrol.com.au stubby holder fitted over the transfer lever.
    WARNING: Towballs used for recoveries can, and do kill people and damage property.

  6. #14
    The master farter
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    Quote Originally Posted by MudRunnerTD View Post
    I would say yoy have a boost leak for sure. That explains the lack of boost and the black smoke as it is tuned for more boost so over feeling now. I woyld be tracing every boost hose looking for a split or blown hose . You may fine it just with the bonnet up and someone revving up the car.
    Already done this mate. Replaced every boost hose in there now. The only thing I haven't checked is the intercooler. But being a barely used Cross country Ic I doubt its the cause. I will look more into a few things when the weather warms up.

  7. #15
    ......... MB's Avatar
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    Big Stogie Cigar trick possibly Mark Mate
    Smoker or not, fill your cheeks with a massive cloudy gob full and pressure witness visually test that aluminium radiator thingy


    Sent from my iPhone using Tapatalk

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    mudski (5th September 2021)

  9. #16
    Patrol Freak jff45's Avatar
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    Have you taken a reading directly from the compressor with the wastegate firmly closed?
    John

    2001 GUII TI 4500 - Now converted to TD42T auto with Nomad valve body

  10. #17
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    Quote Originally Posted by jff45 View Post
    Have you taken a reading directly from the compressor with the wastegate firmly closed?
    No. How do I do that?

  11. #18
    Patrol Freak jff45's Avatar
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    Connect the gauge hose directly to the compressor housing outlet and remove the hose on the wastegate actuator.
    Donít go silly with it in case it boosts high before it overcomes the actuator spring

    The compressor outlet will currently be connected to your boost controller which then feeds back to the actuator.
    I assume your gauge hose is connected to your IC or manifold?
    John

    2001 GUII TI 4500 - Now converted to TD42T auto with Nomad valve body

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    mudski (6th September 2021)

  13. #19
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    Quote Originally Posted by jff45 View Post
    Connect the gauge hose directly to the compressor housing outlet and remove the hose on the wastegate actuator.
    Donít go silly with it in case it boosts high before it overcomes the actuator spring

    The compressor outlet will currently be connected to your boost controller which then feeds back to the actuator.
    I assume your gauge hose is connected to your IC or manifold?
    Yes my gauge reads from a port in the inlet manifold. Then another port T'd (one to the injector pump, one toward the boost controller), then to another T, (one to the boost controller and the other to the wastegate actuator) Apparently its plumbed like this for high boost applications.

    So what should i see doing as you suggest John? What shouldn't I be seeing?

  14. #20
    Moderator MudRunnerTD's Avatar
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    Quote Originally Posted by mudski View Post
    Yes my gauge reads from a port in the inlet manifold. Then another port T'd (one to the injector pump, one toward the boost controller), then to another T, (one to the boost controller and the other to the wastegate actuator) Apparently its plumbed like this for high boost applications.

    So what should i see doing as you suggest John? What shouldn't I be seeing?
    You will be taking out the intercooler. straight off the actuator will show you the boost output at the turbo
    Its a Nissan! =====> Its a Keeper!! ....... Got a TD42 in it BONUS!! ....... I'm a lucky bugger! I've got 2 of em!
    Check out my Toy --> MudRunnerTD's GQ From the Ground Up

    Quote Originally Posted by Rogue Dung Beetle View Post
    Wish it was Nissan though, Toyotas just can't keep up with the Pootrol pace.
    The only good thing about an 80 series is..... the front end?? Wrong!!, the Engine?? Wrong!! the Full Time 4WD system?? Wrong!! Its the NissanPatrol.com.au stubby holder fitted over the transfer lever.
    WARNING: Towballs used for recoveries can, and do kill people and damage property.

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    mudski (6th September 2021)

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