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Leaky valve stem seals

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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whoa
Posts: 461
Joined: 30 July 2008
Year and Model: 850 Turbo Wagon 1996
Location: san francisco
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Re: Leaky valve stem seals

Post by whoa »

Don't really remember---nothing nearly as severe as in the video, anyway.
1996 850 Turbo Wagon

rmorse
Posts: 114
Joined: 1 August 2011
Year and Model: 96 855R
Location: Maryland

Post by rmorse »

Ok, seriously? My dipstick IS smoking a bit. I don't have a glove, so I put some saran wrap over it, and it bubbled up a bit. WTF? I replaced EVERYTHING on the PCV system. EVERYTHING. This ain't my first rodeo doing a PCV job on these cars. First time on a turbo though. What did I miss? And yes, I did clean the PTC nipple thing.

rmorse
Posts: 114
Joined: 1 August 2011
Year and Model: 96 855R
Location: Maryland

Post by rmorse »

Bump


Still looking for ideas as to why my car is still smoking at the dipstick. :x

jblackburn
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Year and Model: 1998 S70 T5
Location: Alexandria, VA
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Post by jblackburn »

Did you scrape out both of the lower engine block ports? The lower one is especially prone to clogging where it goes around a corner.

Is the small vacuum hose in the PCV system still on? Mine kept blowing off, and I finally clamped and glued that sucker down.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

rmorse
Posts: 114
Joined: 1 August 2011
Year and Model: 96 855R
Location: Maryland

Post by rmorse »

jblackburn wrote:Did you scrape out both of the lower engine block ports? The lower one is especially prone to clogging where it goes around a corner.
Yea I did....a lotta gunk was in there.
jblackburn wrote:Is the small vacuum hose in the PCV system still on? Mine kept blowing off, and I finally clamped and glued that sucker down.

Refresh my memory....which hose is this? Where does it go to? Ar eyou talking about the one that goes to the PTC nipple?

jblackburn
MVS Moderator
Posts: 14043
Joined: 8 June 2008
Year and Model: 1998 S70 T5
Location: Alexandria, VA
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Post by jblackburn »

Yep. From there to the left side of the intake manifold.

When did you last change your oil? If you're coming up on a change soon, pick up a can of Seafoam, remove the PCV hose from the top of the valve cover, and pour some of that stuff down in there. That'll go down into the separator box and clean that and the passages out. I was getting a teeny bit of smoke 40,000 miles later after my PCV job this summer, and that took the smoke away again :D
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

rmorse
Posts: 114
Joined: 1 August 2011
Year and Model: 96 855R
Location: Maryland

Post by rmorse »

What about doing the full seafoam treatment? I wanted to do that for some time now....

Just changed the oil 350 miles ago. I'll check the hose when I get home today.

jblackburn
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Year and Model: 1998 S70 T5
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Post by jblackburn »

Go for it if you want when you're closer to your oil change interval again; you might need more than 1 can though.

So, in addition to putting the stuff in the gas tank, oil cap, and the intake manifold, you'd also remove that hose and pour some down in there.

I plan on doing mine here again in a few weeks into the intake manifold - it seemed to smooth out the engine quite a bit last time.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

rmorse
Posts: 114
Joined: 1 August 2011
Year and Model: 96 855R
Location: Maryland

Post by rmorse »

Sounds like a plan! I'll do this, and then if it is still smoking, I'll throw on a catch-can...

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