I've just fixed various leaks in my '04 20VT's PCV system after it started running rough at idle(replaced crankcase & cam cover breather pipes etc). I took the car for a couple of short runs - on the second run it started putting out blue smoke (only noticeable whilst stationary at idle, but maybe I just can't see it when on the move). The car is otherwise running and pulling well. There also seem to be some kind of deposits on the dipstick, which look scarily like mayonnaise (but nothing under the oil filler cap), although it doesn't seem to be using coolant. I checked the fault codes and I've got a 17511 - oxygen (Lambda) sensor heating; B1 S1: performance too low / P1103 - 35 -10 ---intermittent. I can't help but think this blue smoke and my fixing of the PCV leaks must be linked somehow - I've re checked all the pipework and it all looks as it should - has anyone experienced this sequence of events before?
