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Thread: 300 Tdi Tweak

  1. 30th November 2008, 03:40 PM #1
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    300 Tdi Tweak

    Well friday i did the first stage of the Tdi injector pump tweak
    Man what a inprovement , I had to slap myself for not doing this earlier ,
    I could not understand why and how ive driven this thing around so long in standard form
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  2. 30th November 2008, 03:50 PM #2
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    Hi Chris;

    by Stage 1 adjustment I suspect you're referring to "adjusting the stop screw" ?
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  3. 30th November 2008, 04:01 PM #3
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    Some one did mine a few years ago.
    did you go in our out.
    I cant remember which why he did it, and I want to go back a tad.

    Big diffrence but!
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  4. 30th November 2008, 05:13 PM #4
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    Quote Originally Posted by Disco_owner View Post
    Hi Chris;

    by Stage 1 adjustment I suepct you're referring to adjusting the stop screw ?
    Yep
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  5. 30th November 2008, 05:13 PM #5
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    Quote Originally Posted by hook View Post
    Some one did mine a few years ago.
    did you go in our out.
    I cant remember which why he did it, and I want to go back a tad.

    Big diffrence but!
    Yes screw in one and a half turns
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  6. 30th November 2008, 06:15 PM #6
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    thought about doing my'n several times......especially as i have the slightly bigger intercooler....couple of things put me off though

    smoke.....

    and it concerns me whether it will effect my engine braking, as its crap already in low first i would like to go slower not quicker.
    Our Land Rover does not leak oil! it just marks its territory.......



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  7. 30th November 2008, 06:21 PM #7
    waynep
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    The stop screw adjustment only has no effect on smoke or engine braking ( well it didn't seem to on mine ). It makes quite a difference to the turbo lag.
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  8. 30th November 2008, 06:29 PM #8
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    Quote Originally Posted by waynep View Post
    The stop screw adjustment only has no effect on smoke or engine braking ( well it didn't seem to on mine ). It makes quite a difference to the turbo lag.
    I would say a very BIG difference on turbo lag
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  9. 30th November 2008, 06:46 PM #9
    Bush65
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    What screw is being called the stop screw?

    Do you mean the full load adjusting screw at the rear, near the stop solenoid?

    Or the adjustment screw above the sliding pin.

    IMHO, the 1st adjustment should be the rotational position of the control cone. If you adjust anything else, apart from the full load adjusting screw, then they will go out of adjustment when the control cone is adjusted.

    Here is a diagram from a Bosch VE pump handbook that shows the parts of the boost compensator.
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  10. 30th November 2008, 06:49 PM #10
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    Quote Originally Posted by rangieman View Post
    Yes screw in one and a half turns
    Same as mine 4.5 years ago.

    Big diffrent in power and smoke,

    I wont to go back that half turn, and see.
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