Originally Posted by elp_jc
Please do. VANOS check valves supposedly don't come into play at start-up according to BMW's own techical file, so curious how they can be a factor. But hope they solved your issue
. Looking forward to your evaluation. Take care.
The check valves hold pressure - so while they are not engaged at startup, they hold pressure in from when the last time the engine was on.
BTW: so far, so good.