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Valve Stem Seals for '98 V70 AWD

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 seals.

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?

Thanks!

Reply to
bockdharma
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Looks like a big job, according to my workshop manual it takes 9.3 hours to install new ones.

Niels

Reply to
Niels Bengaard

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.

Reply to
Mike F

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.
Reply to
bockdharma

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

Reply to
Niels Bengaard

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..

Reply to
Tim (remove obvious)

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