2003 N42 316ti 93,335 miles
Did the CCV (new hoses, oil separator, manifold gaskets, dipstick tube) today with another pair of hands. Ended the day with a vacuum leak from somewhere but I was too tired, sore and hungry to chase it down. Started at 1030 and put the bonnet down at 2140.
No fault codes present.
Lumpy idle (400-1200) but did not cut out during warm up
With bonnet open can hear high pitched whistle
Drove 8 miles on motorway, then coming to a stop engine cut out
No noticeable bogging during acceleration (I'd go so far as to say it was better than before)
Where are my likely sources of this leak? I reckon it's going to be around the intake manifold somewhere. Intake boot and hoses have been replaced.
Some pics of the old oil separator and parts removed below...