IPD sale Volvo Parts
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

Puff of smoke after idle... is that likely valve stem seals or turbo?

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

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

User avatar
clarkerussell
Posts: 79
Joined: Sat Mar 22, 2008 6:11 pm
Year and Model: 1998 S70 GLT
Location: Charlotte, NC
Has thanked: 13 times
Been thanked: 1 time
United States of America
clarkerussell

Puff of smoke after idle... is that likely valve stem seals or turbo?

Post by clarkerussell » Fri Apr 26, 2019 9:20 am

Hello all,

After replacing the PCV system on my 1998 S70 GLT I noticed that the smoking issue after long idle is MUCH less pronounced than before. Now, after about 5 minutes of idle, I get a little puff of blue smoke when I rev the engine to ~3000 RPM, but not some huge cloud. For reference, I had pretty severe positive pressure at the oil fill cap before the fix, now I have good negative pressure...

So, my question is if smoke at idle is typically a condition of failing valve stem seals, or is it equally likely to be turbo related? REALLY hoping it's turbo related as that seems like the quickest fix, but didn't want to waste the $$$ if there is no chance that's the issue.



User avatar
RickHaleParker
Posts: 2761
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 305 times
United States of America
RickHaleParker

Re: Puff of smoke after idle... is that likely valve stem seals or turbo?

Post by RickHaleParker » Fri Apr 26, 2019 9:47 am

Puffs of blue smoke at startup and after idling are symptoms of valve stem seals.
ATP Re-Seal Additive AT-205 might buy you some time, could buy a lot of time. I get mine at Advance Auto Parts.


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

User avatar
clarkerussell
Posts: 79
Joined: Sat Mar 22, 2008 6:11 pm
Year and Model: 1998 S70 GLT
Location: Charlotte, NC
Has thanked: 13 times
Been thanked: 1 time
United States of America
clarkerussell

Re: Puff of smoke after idle... is that likely valve stem seals or turbo?

Post by clarkerussell » Fri Apr 26, 2019 11:10 am

Thanks for the confirmation, that's what I was assuming.

I just placed an order with Amazon (through the link!!!) and it'll be delivered tomorrow. We'll see how it goes!



User avatar
erikv11
Posts: 9012
Joined: Sat Jul 25, 2009 2:03 pm
Year and Model: 850, S/V70, 06 S60R
Location: Iowa
Has thanked: 53 times
Been thanked: 176 times
United States of America
erikv11

Re: Puff of smoke after idle... is that likely valve stem seals or turbo?

Post by erikv11 » Fri Apr 26, 2019 12:54 pm

What Rick said, all of it. Good luck!


'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 140k
'98 S70 NA, 205k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 275k
'06 S60 R, 155k
gone: '96 NA 850 210k, '98 NA V70 182k

Post Reply