Hi , new here to forum. I have a 2005 volvo xc 70 with about 123000 miles. Installed new PCV after having blue smoke at idle. Still Have some smoke at idle, a small puff here and there but much improved after the pcv change- not blue anymore -

Just after I changed the pcv, I noticed a slight miss or stutter on speeds above 45 . Again , wasn't everyday . THis weekend, noticed miss about 5 times on a longer highway drive , when attempting to change lanes etc.

I have changed the spark plugs, cleaned MAF sensor. NO CEL.

I checked all hoses, etc today and got down to the turbo. Noticed some some shaft play as when I pushed the vein it would tap against the housing. I don't have any experience with Turbos.

Could the smoke on idle and now the miss be caused by a bad turbo or are there other things I should be looking at? Also, know any good places to get a used Turbocharger for a 2005 volvo xc 70 ?

 

If the fins are hitting then the turbo is worn out.

 

can the bad turbo also cause the miss at highway acceleration?

 

Maybe if it is dumping a bunch of oil into the system.

 

There are two different reasons for black and white smoke coming from the tail pipe.
Black smoke means fuel runs rich (car getting to much gas). Check fuel pressure/air filter.
In some cases the white smoke means car is burning oil or transmitting fluid. Have them checked/replaced.
If you can feel a smelly smoke it can be catalytic converter.
In a worst scenario if car blowing white smoke it can be engine coolant is getting into an engine cylinder from a bad head gasket ,or a warped/cracked head. So you need to keep your eye on coolant level and check your engine for overheat.