I have a '94 850 turbo wagon that puts out a decent puff of blue smoke after it idles for a while when it's warm. Other than that it runs clean. Any ideas? Thanks, Tim

 

A puff or a lot?

Blue smoke = EngineOil

 

Just a puff... You can see it in the review mirror. It's just when you take off.[/align]

 

Vent system could be clogged or the turbo might be going bad.

 

Any tips on how to clean the vent system? I just bought the car and I don't have a manual yet. Thanks for the reply. Tim

 

Best thing to do would be to replace the vent box and all hoses.
It has probably never been done.

 

What's the mileage?

Tech, by vent system, you mean the PCV right?

 

It has 170k. I'll check with IPD and see if they have the parts. I'm a Air-Cooled VW guy so these watercooled things are a bit "new" to me. Thanks, Tim

 

FCP Groton would be the easiest place to look since they carry a huge selection of OEM parts, but if you check the sticky, I'm sure you could do some price shopping..

IPD is expensive...

 

http://www.ipdusa.com/Volvo-850/Engi...p-72-153-1894/

I'm thinking this is it.
Do you need to remove the intake manifold to get to it?
Thanks for all the advice. Tim

 

This is the one from FCP...Seems like there is more parts to it...

http://www.fcpgroton.com/volvo850oiltrapturbo.htm

From my understanding, you don't need to remove the IM.

 

On the 850 Yes you will need to remove the intake to replace everything.

 

Update!!
I replaced the whole PCV system with new parts and I still have the smoke.....
When it's idiling I have smoke out the dipstick tube (with the stick removed) and out out of the fill cap.
This car has 170k on it... I guess I need to do a leakdown test and see what I come up with....
Any other suggestions?? Thanks, Tim

 

Start with a leakdown test and a compression test (Dry then wet)

 

I have the same car & problem. The problem is excessive crankcase pressure, which is sucked into the intake through the oil seperator (PCV system). I have replaced this, and all hoses often. The other problem is that oil seeps out through the dipstick and fill port. This has run accross the engine and the passenger side front brakes. I have found no official correction from various sources. The most credible explanation thus far is bad exhaust valve seals, causing the excessive crankcase pressure..... I plan to perform a valve job once my better-half allows me a couple weeks of down time for the car...Also need to replace the evaporator.

 

Here is the kit that is sold by fcpgroton for $135. I didn't add the prices up for the ipd items you posted. I liked just buying the kit. Yes you do have to take off the intake manifold.

http://www.fcpgroton.com/volvo850oiltrapturbo.htm#early

 

...and if you plan to do the job by yourself, be sure to order intake manifold gasket as well.


JPN