Valve Stem Seals for '98 V70 AWD

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

Niels

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.

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.

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

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..