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Thread: 1HD tojo crap performance

  1. 20th June 2016, 04:41 PM #1
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    1HD tojo crap performance

    Howdy.
    Let me stop you before you start, no 'it's a Toyota they're all crap' comments please
    We have a pair of 1HD tojo utes at work, in addition to our 3 1VD V8s.
    One of the 1HDs is fine, pulls like a train, loaded or unloaded.
    The other is fine empty but once you put a load on it it's a slug. I towed 50 bales of straw in a box trailer today and I was down to third gear up minor hills trying to maintain 70kmh and failing, the other 1HD charges up hills in 5th gear with trailers full of drill core and scrap metal, much heavier than today's load. Even unloaded with just the trailer it was noticeably bad.
    Vehicle is serviced every 5-8k kms, well maintained, and has at some point had a top end rebuild. 276k on the odo.
    Suggestions please
    Cheers
    Muppet

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  2. 20th June 2016, 05:00 PM #2
    MR LR
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    Should be replaced with a 300tdi auto.

    The be-all and end-all of tow vehicles.
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  3. 20th June 2016, 05:24 PM #3
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    Quote Originally Posted by MR LR View Post
    Should be replaced with a 300tdi auto.

    The be-all and end-all of tow vehicles.
    Mmmm i smell at rat in that hole
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  4. 20th June 2016, 05:33 PM #4
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    Partially blocked exhaust?

    Needs a high speed highway run?
    Ron B.
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  5. 20th June 2016, 05:37 PM #5
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    Im just going to spit out some ideas without knowing what you've already checked..
    Air filter, air hose (collapsing), fuel filter, fuel strainer in tank, compression, dragging handbrake/footbrakes, injector pump inlet strainer, exhaust blockage.
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  6. 20th June 2016, 05:44 PM #6
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    Egr valve stuck open is my best guess. They can also go into limp mode with overboost due to wastegate actuator pipe splitting. Have you put a boost gauge on it? And how many kms since it had a set of injectors? It is also possible to mistime them has it had a timing belt recently? These are a great engine it should pull well .

    Jc
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  7. 20th June 2016, 05:44 PM #7
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  8. 20th June 2016, 05:50 PM #8
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    Ahh of course, EGR valve. I was thinking of a 1hz before for some reason.
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  9. 20th June 2016, 05:56 PM #9
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    Quote Originally Posted by rangieman View Post
    Mmmm i smell at rat in that hole
    Some one let the work experience kid at the computer again.
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  10. 20th June 2016, 05:56 PM #10
    cafe latte Guest
    Quote Originally Posted by Beery View Post
    Im just going to spit out some ideas without knowing what you've already checked..
    Air filter, air hose (collapsing), fuel filter, fuel strainer in tank, compression, dragging handbrake/footbrakes, injector pump inlet strainer, exhaust blockage.
    Fore sure check the strainer it is in the fuel in or out pipe cant remember which, remove the banjo and you will find it. I have seen them full of crud, car works, but sllowww.
    Chris
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