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Thread: TD5 Camshaft damage - any input

  1. 12th July 2011, 09:42 PM #1
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    TD5 Camshaft damage - any input

    Hey All,

    Bit of an odd one here.

    2003 D2a TD5 Manual. 215k km.

    Was seemingly perfect when bought.

    About 2 months later, it started to smoke badly when cold, but mainly cleared up when warm. It still smelt a bit fuely.

    When cold it also had a miss, which is noticeasble if you try and hold a steady revs, say 1500+. You can feel it miss.

    Anyway I finally had the chance to take a few bits off this evening to have a look.

    (A specialist had made a comment that he thought it was an issue with no2 cylinder) - I checked the cylinder balances and it was showing some slightly odd readings... anyway... pics.

    Rocker cover off,

    Bad lobe wear on the injector fuel pump lobes and rockers. Worst on cylinder 2 where there is what seems to be some sort of impact damage.



    All however have damage:



    Mismatched injector:



    Any thoughts on what could cause this?

    Poorly set bump clearances on the injectors?

    What other damage am I likely to find? Seriously hoping there is no cam journal damage in the head.

    Anyone seen anything like this before?

    We did a full service after it was purchased including removing the sump and no evidence of any damage was seen in the sump.

    Rgds
    Peter.
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  2. 12th July 2011, 09:52 PM #2
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    has it been eny more tappy?? seen a few very high k td5s and non had ware like that, not sumthen simple like lose of oil press to the top end?? or blocked oil gallerys in the head,
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  3. 12th July 2011, 09:57 PM #3
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    Hi Stig,

    I dont think so regarding the oil pressure as there is no apparent damage on anything apart from the lobes and rollers for the injector fuel pumps.

    All the other lobes are still smooth and shiny.

    As for noise, not that I had noticed.

    Cheers
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  4. 12th July 2011, 10:12 PM #4
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    Didn't Tombie warn about Mobil 1 doing this??
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  5. 12th July 2011, 10:57 PM #5
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    Quote Originally Posted by djam1 View Post
    Didn't Tombie warn about Mobil 1 doing this??
    Tombie said:

    Quote Originally Posted by Tombie View Post
    Some Mobil 1 TD5s are showing Cam wear beyond their age...

    snip, snip...

    Seems Td5 hardening can vary and the M(obil)1 engines show more wear.
    I don't understand why this would be the case specifically for Mobil 1 as Mobil 1 has the highest lubricity rating.



    I do wonder though, as this has presented in a very short amount of time.
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~
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  6. 13th July 2011, 02:25 PM #6
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    Pete,

    That is a similar wear to others I have seen with LR's 20,000km service interval and / or poor quality/ incorrect oils. ALSO, some early cams had poor hardening, you may find the cam date of manufacture is 2000 or similar. That mismatched injector is the right one, all the others are black tops which are incorrect for MY2003.

    JC
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  7. 13th July 2011, 03:38 PM #7
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    A question for those in the know...

    Is it possible the later injectors and rockers have been fitted?
    I understand the later injectors work at higher preshure and thus would load the cam lobe more, just a thought.

    Early type enginge serial No prefix 10P to 14P, the later was 15P to 19P(from Haynes manual).
    When was the change of motor fitted?
    And was this at the same time the 3 hose fuel regulator was introduced?
    Cheers, Kyle



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  8. 13th July 2011, 03:56 PM #8
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    To my knowledge the camshaft is identical across all versions.

    There are however 2 versions of the rocker assy

    Injector rocker shaft assy - To VIN 1A736339 - To end of 2001MY.
    1 ERR7231 Rocker assy-injectors
    2 ERR7065 Screw-adjusting-rockers
    3 ERR5529 Nut-locking-adjuster

    Injector rocker shaft assy - From VIN 2A736340 - From 2002MY.

    1 MUI000040 Rocker assy-injectors
    2 LGV000020 Screw-adjusting-rockers
    3 ERR5529 Nut-locking-adjuster

    Its definetely a late engine as its got the water cooled EGR, later type fuel block etc etc.

    I will clean up the rocker assy and see if its got a number next time I see the car.
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  9. 13th July 2011, 04:05 PM #9
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    Pete - I would see if someone in metalurby and materials at UQ or QUT can give your their opinion (I'm sure you can do a cad-related barter/swap ? ).

    Killer may have some contacts?
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  10. 13th July 2011, 04:25 PM #10
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    Quote Originally Posted by isuzurover View Post
    Pete - I would see if someone in metalurby and materials at UQ or QUT can give your their opinion (I'm sure you can do a cad-related barter/swap ? ).

    Killer may have some contacts?

    I can help with that, I'm a UQ Mech student and know someone who could give their opinion.
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    https://www.aulro.com/afvb/the-veran...ies-1-2-a.html
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