Valve Stem Seals for '98 V70 AWD

Discussion in 'Volvo V70' started by bockdharma, Jul 18, 2006.

  1. bockdharma

    bockdharma Guest

    I am reasonably sure that the puff of blue smoke on start (or after at
    least a ~30 min rest) indicates an issue with deteriorating valve stem

    The actual seals are cheap, but are they "easy" to remove/replace? I
    can't seem to find any DIY info on their extraction/replacement. Where
    is a good place to get the tools? I think at least two specizlied seal
    tools are needed.

    If it's not a good idea to attempt oneself, can anyone give me a
    reasonable labor estimate (in hours) so I can budget?

    bockdharma, Jul 18, 2006
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  2. I am reasonably sure that the puff of blue smoke on start (or after at
    Looks like a big job, according to my workshop manual it takes 9.3 hours to
    install new ones.

    Niels Bengaard, Jul 18, 2006
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  3. bockdharma

    Mike F Guest

    I would say this is not a job for the do-it-yourselfer. If you don't
    have the special tool to pull the upper half of the head straight up,
    one end of the casting *WILL* crack off. Also, if you don't use the
    right amount and kind of sealant between the 2 halves of the head, then
    you will have oil leaks or block oil passages. This is a job best left
    to an experienced Volvo specialist.

    Mike F.
    Thornhill (near Toronto), Ont.

    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
    Mike F, Jul 18, 2006
  4. bockdharma

    bockdharma Guest

    Thanks for the info. Checking around different forums, there is a
    suggestion to actual use Auto-RX. I may do that, but I won't hold my
    breath. At least I'll know I won't be having any sludge issues.

    9.3 hours sounds like a TON of time to do this job. Wow. But I have
    to agree that it sounds best left to a shop.
    bockdharma, Jul 18, 2006
  5. Thanks for the info. Checking around different forums, there is a
    Have you seen any other with bad valve seals when you looked on the net? I
    havent heard of that problem before, so I wouldnt look there first. Perhaps
    a bad turbo if its a turbo?

    Niels Bengaard, Jul 18, 2006
  6. Valve stem seals are VERY unlikely- i've not known any to start seeping down
    the stems on any white block 5 or 6 cylinder even after 200k+.

    You're problem is likely crankcase pressurization from a blocked breather
    tree on the throttle body.

    As an aside, lifting the cam carrier / cams in / out / etc etc is not for
    the faint hearted and definately NOT without the correct pullup/pulldown
    tools, else it will end in disaster.

    Tim \(remove obvious\), Jul 19, 2006
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