Are 2.4i inline 5 known to be more rough idling than other 4s? My daughters my2010 doesn't throw codes and runs excellent but it's always seemed to idle rough, kinda like a chug chug missing like symptom only at idle. When going thru revs it smooths out. I have no reference as this is the only Volvo...

On 2007, 2008, oil filter/breather does vertical left hose send oil fumes to the trap box and then send it out the right larger hose to intake manifold? I just need a verification as I think I have blockage on return. somenes got to know, thanks

2010 S40 60k classic symptom of clogged PVC, no vacuum at oil filler when removed with engine run. Just blows air out of it and dipstick hole. I took catch can /filter off engine and found PVC valve within canister to work like it should one way. There is no blockage at mating surfaces. The small ho...