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Blue smoke from exhaust

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radek93
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Year and Model: S70 98
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Post by radek93 »

B5254t. What does blue smoke from the exhaust mean? It only smokes when the engine is warm, when it runs for several dozen seconds at idle speed and after increasing the speed. It does not smoke when the engine is cold immediately after starting, it does not smoke when accelerating, it does not smoke when engine braking and then accelerating. The oil filler cap is gently sucked on when the engine is running. So PVC seems to work well.
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scot850
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Post by scot850 »

The 2 main issues are hardened valve stem seals, or worn turbo seals.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
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misha
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Post by misha »

Or wrong viscosity oil(read too thin)..but like Neil said...turbo or valve stem seals.
2010 S80 D5 / restyling / fully equipped / Twin turbo / Savile Gray Metallic (492)

History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
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Clemens
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Post by Clemens »

+1 on the above mentioned options
1996 855 R,
black on black, M56 swapped, Quaife, TME 2.5 exhaust, 17 inch Volants

2010 V70 D5,
Saville Gray on tan leather, 18 inch Odysseus
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Sveedy
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Post by Sveedy »

White - Water
Black - Fuel
Blue - Oil
Try to learn life's bad lessons vicariously through others.


1996 850 Turbo GLH ( Goes Like Hell )
1999 V70 GLT
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xanthefin
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Post by xanthefin »

red - fire
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foggydogg
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Post by foggydogg »

Since it doesn't smoke when accelerating that generally eliminates rings, and based purely on age, if the car hasn't had valve stem seals yet, they are likely age-hardened. A suggestion would be to change the oil - follow the recommended viscosity in the owners manual, the folks who designed the car do know best - and see if it has any effect on the behavior. Avoid all the Magic In A Bottle, that stuff is good for draining your wallet and not much else.
69 1800s, @500k Death by Rust
94 850 Turbo, T-boned, ambulance for me, crusher for it
97 855 T5, 855 R projects
98 V70R x2, Silver Junkyard rescue, Coral Red
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