Volvo D4 Crankcase breather

[GusC@AK]

Quick question: is it normal to see a little steam/smoke coming from the crankcase breather filter (at cruising speed)? Filter is new, and no oil in the air filter.

 

[Assassin]

Depends on many things as most smoke if light is water vapour evaporating from the oil if the engine hasn't been running for a while as it dries it out, could be engine wear or other mechanical problem.

 

[volvopaul]

Quick question: is it normal to see a little steam/smoke coming from the crankcase breather filter (at cruising speed)? Filter is new, and no oil in the air filter.

The filter is encased inside a plastic housing , the outlet pipe is ducted to the air filter box , so the answer is no you should not unlike the earlier breather filter on older Volvo models .

so did you change the o ring At the same time , it could be just the lid is incorrectly screwed on .
Pull the pipe out the air box and run it again , if the smoke is excessive you have a piston blow byproblem , check the oil level