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Thread: 5.0 Litre V8 Timing Chain issues

  1. #11
    Senior Member #steve's Avatar
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    I phoned Millers Oils and they said both the 0W and the 5W were suitable for the V8, there was no advantage for either.

    So if the guides are aluminium, do the newer ones have steel on them to help reduce wear?

    I'm hoping to keep my V8 as long as possible and I have put money aside for when mine fail.
    2010 Jaguar XJL V8 Portfolio.

  2. #12
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    Very interesting thread and the video is worth watching and the workshop diagrams in post #2 appear to show the 'modified' tensioners !

    https://www.jaguarforums.com/forum/xf-xfr-x250-44/interesting-video-about-5-0-timing-guide-wear-191810/
    2003 S-Type 2.5 Sport automatic,platinum silver / warm charcoal (gone)
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  4. #13
    Senior Member #steve's Avatar
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    Thanks for that, very interesting.

    At least I now know it's not an oil problem (although regular changes wont do any harm) and the new guides have been uprated.

    Does anyone know the approximate cost for this job?

    My guess is, as the car gets older it will be an uneconomic repair.
    2010 Jaguar XJL V8 Portfolio.

  5. #14
    Senior Member #steve's Avatar
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    picture host

    Here is a photo of the new guides showing the hardened area.
    2010 Jaguar XJL V8 Portfolio.

  6. #15
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    Question

    The new tensioner is easy to spot as well, the 'piston' is at a slightly different angle to the earlier design.

    This suggests that the earlier cars are just as likely to suffer from the same issues unless they have had the guides and tensioners replaced with the 'new' design ?
    2003 S-Type 2.5 Sport automatic,platinum silver / warm charcoal (gone)
    2004 Subaru Impreza STi Type UK (now gone as well)
    2006 S-Type R Midnight / warm charcoal
    2015 XE 'S' 3.0 V6 S/Charger Italian racing red / pimento+jet
    2004 XJR Platinum / warm charcoal

  7. #16
    Senior Member #steve's Avatar
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    I have just read a interesting article by a Land Rover specialist in the USA.

    They reckon 2010 - 2016 motors are the most at risk and its a $5-6k repair
    .
    If a cam chain slips and ruins the engine then your looking at $22,500 plus ancillary parts and labour. (2019 prices)

    The chains are lubricated by oil spray tubes so clean oil is essential and they have been recommending 7500 mile service intervals although they are considering 5 or 6k.

    So even with the updated guides and tensioners regular oil changes are recommended.
    2010 Jaguar XJL V8 Portfolio.

  8. #17
    Senior Member Big cat little cat's Avatar
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    Quote Originally Posted by #steve View Post
    My guess is, as the car gets older it will be an uneconomic repair.
    That's the reason I don't own mine anymore.
    Just when you think you can see a light at the end of the tunnel,
    you find that it's just someone with a torch bringing you some more work!

    XF 5.0 Portfolio.
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  9. #18
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    Quote Originally Posted by #steve View Post
    I have just read a interesting article by a Land Rover specialist in the USA.

    They reckon 2010 - 2016 motors are the most at risk and its a $5-6k repair
    .
    If a cam chain slips and ruins the engine then your looking at $22,500 plus ancillary parts and labour. (2019 prices)

    The chains are lubricated by oil spray tubes so clean oil is essential and they have been recommending 7500 mile service intervals although they are considering 5 or 6k.

    So even with the updated guides and tensioners regular oil changes are recommended.

    The 'US' model year updates are usually a year behind the UK, so I would interpret that as 2009-2015 in the UK ?
    2003 S-Type 2.5 Sport automatic,platinum silver / warm charcoal (gone)
    2004 Subaru Impreza STi Type UK (now gone as well)
    2006 S-Type R Midnight / warm charcoal
    2015 XE 'S' 3.0 V6 S/Charger Italian racing red / pimento+jet
    2004 XJR Platinum / warm charcoal

  10. #19
    Senior Member #steve's Avatar
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    Quote Originally Posted by The Voices View Post
    The 'US' model year updates are usually a year behind the UK, so I would interpret that as 2009-2015 in the UK ?
    That's what I thinking, a face lifted V8 XJ should be ok.
    2010 Jaguar XJL V8 Portfolio.

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