Marius's Touareg R5 life thread. - Page 83




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  1. #1641
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    Well, holding thumbs for you and you have a lot of support here.

    I have learnt huge amounts through your misfortune.
    2007 Touareg 3.0 V6 TDI (Facelift, Air, Rear Diff Lock, Rear Mounted Spare)
    2008 Audi A4 B8 2.0 TDI (Multitronic)
    2009 KTM 990 Adventure (Daily Commuter & Weekend Fun)
    2012 Imagine Trailvan 4-Sleeper

    * consumption needs to be seen in the context that the vehicle is towing an Imagine Trailvan 50% of the time.


  2. #1642
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    Quote Originally Posted by Kortgat View Post
    Well, holding thumbs for you and you have a lot of support here.

    I have learnt huge amounts through your misfortune.
    This is my goal and reason for documenting everything. I really hope I can save someone the headache in future.

  3. #1643
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    Hi Marius - you have contributed significantly in this forum and I am sure any number of persons have benefited from this. You add great value - thank you.

    I am in an engineering profession and many a time have found myself to be struggling with a problem - basically going in circles. I would check the facts over and over again, to simply arrive at the same end result / conclusion.

    What I have learned over the years is that sometimes, simply walk away from the problem and take a break, mind break. Have a smoke, beer, nice meal, day away, party etc and look at the problem afresh. Nine out of 10 times you will find the answer within the first few minutes and probably in a area that you never anticipated and casually overlooked or assumed to be correct.

    Being "gatvol" also plays a part - believe me I have been there a few times - and it normally leads to the last straw breaking the camel's back when the camel was not even ill.

    I really hope you come right and enjoy the vehicle as much as you hoped to. I find it strange that there is no Treg mechanic that can provide some experienced input.

    Wishing you well
    Find the solutions, not the problems.

  4. #1644
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    Just tested return flow with engine cold and it's dismal.

  5. #1645
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    Quote Originally Posted by MariusFourie View Post
    Just tested return flow with engine cold and it's dismal.
    Less than when warm or more or same?

    To me this then points to fuel flow then not being your issue, or you would have this problem with the engine cold also.
    2007 Touareg 3.0 V6 TDI (Facelift, Air, Rear Diff Lock, Rear Mounted Spare)
    2008 Audi A4 B8 2.0 TDI (Multitronic)
    2009 KTM 990 Adventure (Daily Commuter & Weekend Fun)
    2012 Imagine Trailvan 4-Sleeper

    * consumption needs to be seen in the context that the vehicle is towing an Imagine Trailvan 50% of the time.


  6. #1646
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    Quote Originally Posted by Kortgat View Post
    Less than when warm or more or same?

    To me this then points to fuel flow then not being your issue, or you would have this problem with the engine cold also.
    about the same.

    When the fuel is warm the ecu lengthens the injection cycle to compensate for the expansion of the fuel.

    If injection duration is constant you will get more power when the engine is cold due to the fuel being more dense.

  7. #1647
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    Ok, makes sense. Still some hope it's the fuel filter then.
    2007 Touareg 3.0 V6 TDI (Facelift, Air, Rear Diff Lock, Rear Mounted Spare)
    2008 Audi A4 B8 2.0 TDI (Multitronic)
    2009 KTM 990 Adventure (Daily Commuter & Weekend Fun)
    2012 Imagine Trailvan 4-Sleeper

    * consumption needs to be seen in the context that the vehicle is towing an Imagine Trailvan 50% of the time.


  8. #1648
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    Quote Originally Posted by Kortgat View Post
    Ok, makes sense. Still some hope it's the fuel filter then.
    That's my silent prayer at the moment.

  9. #1649
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    I think I found the issue.

    I just tried pumping through the filter. Hardly any flow.

    Swapped the feed and return and it pumps fine. There must be some one way valve in the filter. Looks like the filter manufacturer made a booboo on the stamping that they put on the nipples to mark what is what.

    Now before you try and blame me. I did mark the pipes prior to taking them off. If I can swap a treg engine without having any bits or bolts leftover then I'm sure I can mark some pipes.

    Anyway, regardless if it's my fault or the manufacturer fault. As long as it sorts the issue.

  10. #1650
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    Didn't you drive it like that for a while and it was fine?
    I'm not arguing, I'm just explaining why I'm right!

  11. #1651
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    Quote Originally Posted by Francois Theron View Post
    Didn't you drive it like that for a while and it was fine?
    I thought it was fine but I never drove it long enough for the issue to show it's head. I suppose the tandem pump sucked so hard that it sucked past the bypass valve or something and once the car is nice and warm and the full demand for fuel comes into effect it can't keep up.

    I don't know, but I'm on my way to get a fresh filter now (can't just swap the pipes around as I'll be backwashing the filter into the injectors if I do that)

    I'll maybe go for a drive to dad's place tonight (50 minute drive) to see if it has cured the issue.

  12. #1652
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    I really hope the solution is that simple
    I'm not arguing, I'm just explaining why I'm right!

  13. #1653
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    new filter in place and pipes fitted according to an ElsaWin schematic next to me.

    Ran the intank pump for 30 seconds to prime the system via VCDS.

    Started her up and let it settle for a minute to clear air etc.

    Then did a return flow test.

    The test earlier was less than a cup full of diesel over 60 seconds.

    This is the result with the new filter. Car also revs smoother.

    Attached Images Attached Images  
    Last edited by MariusFourie; 2014/03/24 at 04:19 PM.

  14. #1654
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    Early celebrations, but woooohooo I'm happy for you!

    I must admit, I would have just run the same filter again, would not have thought of the consequence of flushing all the dirt into the injectors! Very good thinking there!

    ...again not the poor Treg's fault!!!
    2007 Touareg 3.0 V6 TDI (Facelift, Air, Rear Diff Lock, Rear Mounted Spare)
    2008 Audi A4 B8 2.0 TDI (Multitronic)
    2009 KTM 990 Adventure (Daily Commuter & Weekend Fun)
    2012 Imagine Trailvan 4-Sleeper

    * consumption needs to be seen in the context that the vehicle is towing an Imagine Trailvan 50% of the time.


  15. #1655
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    Do I take R2-00 out of the till, or at least get a tick? LOL.

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  16. #1656
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    OK, so let's recap.

    Dud engine - I suspect previous mechanic made a hash of the glowplug change
    windshield shattered - my fault
    Failed xenon ballast - bad rubber seal from age - car's fault
    suspension bushes - service item but car's fault dependent on previous use
    passenger door sag - perhaps wind caught it
    Aircon - VW dropped a screw that chaffed the condensor and the AC guy f'ed up the pump clutch
    Alternator - bearing failed, service item
    Turbo seals - old and coked up. I think previous owner didn't idle down
    Air suspension - rats
    speed sensor - car's fault (or at least the sensor manufacturer's fault)
    failed injector - bad fuel
    judder under load - bad filter

    So all in all the car was at fault only two times. Hardly unreliable. The rest is outside influences and just luck of the draw. It's made me wiser and hopefully I have helped (or will help in future) touareg owners.

  17. #1657
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    Quote Originally Posted by MariusFourie View Post
    OK, so let's recap.

    Dud engine - I suspect previous mechanic made a hash of the glowplug change
    windshield shattered - my fault
    Failed xenon ballast - bad rubber seal from age - car's fault
    suspension bushes - service item but car's fault dependent on previous use
    passenger door sag - perhaps wind caught it
    Aircon - VW dropped a screw that chaffed the condensor and the AC guy f'ed up the pump clutch
    Alternator - bearing failed, service item
    Turbo seals - old and coked up. I think previous owner didn't idle down
    Air suspension - rats
    speed sensor - car's fault (or at least the sensor manufacturer's fault)
    failed injector - bad fuel
    judder under load - bad filter

    So all in all the car was at fault only two times. Hardly unreliable. The rest is outside influences and just luck of the draw. It's made me wiser and hopefully I have helped (or will help in future) touareg owners.
    Added 2So, and blew up the engine, clogged the filters and injectors, your fault.
    Cheers

    ZS5KAD Yeasu Ft-897D
    2 V8's a V6 and an inline 4
    The nice thing about going the extra mile - the road is never congested.

  18. #1658
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    Quote Originally Posted by Fluffy View Post
    Added 2So, and blew up the engine, clogged the filters and injectors, your fault.



    I'll warn dad that his v10 is waaaaaay overdue on an engine blowup.

  19. #1659
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    Quote Originally Posted by MariusFourie View Post



    I'll warn dad that his v10 is waaaaaay overdue on an engine blowup.
    The V10 is two complete identical 2.5ís in a single case. Going to take twice as long?
    Cheers

    ZS5KAD Yeasu Ft-897D
    2 V8's a V6 and an inline 4
    The nice thing about going the extra mile - the road is never congested.

  20. #1660
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    Quote Originally Posted by Fluffy View Post
    The V10 is two complete identical 2.5ís in a single case. Going to take twice as long?
    Surely as an intelligent man you should realise that having two of those engines should double the chances of failure on one (either) of them.....

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