540i6 idling issues

[dgdara]

Hello guys, I'm currently battling with my idle on my 540i6. So, let's start from the beginning.


The car was torn apart to retime the engine since it had issues with the timing, we re did the timing like 6 times, till we got it correct (I hope). Currently when you delete the adaptations you get error codes 33 and 34 which are Camshaft control bank 1 and bank 2, but when the car does it's adaptations or I do ~100ish kms the errors are gone and nothing is left, but that is not the issue I'm currently facing. When we started on the timing at the time I bought a Getrag 420G tranny from M5 e39 + LSD with the whole rear axle, installed everything, did the final timing of the car and started the car - car was idling funny or just damn did not idle, at a cold start engine revs itself up to nearly 4k revs and slowly looses the revs then bounces back it just bounces from 700 to 2.5k when warm (when and how it decides) and just dies when it wants to. I checked all the vacuum hoses - everything is as it should be, I heard the CCV/PCV vavle is whining when there are some revs so decided to change it - nothing, still same whining from the CCV/PCV. Sprayed the whole car with Start spray to check for any leaks - nothing changes, still you cannot get a clear read out of it since it changes it's revs withing seconds, when this happend I though let me read the errors and - nothing, was looking at the live data nothing interesting until I saw what the camshaft sensors were showing (video will be at the end). Tried to fire it up with no sensors attached - nothing, car just spits gas, tried with one, car was just not turning over. Currently I'm out of ideas on what to do/check, hoping to get some help from you guys, sometimes car idles fine when removing the dipstick, others not. Also car is running very rich, but pulls hard...


Video of car idling and PCV whistling : https://www.youtube.com/watch?v=hOz4vtuPBfg
Video of camshaft live data : https://www.youtube.com/watch?v=n4pGKWkz4jY

[dgdara]

Tested new MAF and throttle body and a camshaft sensor - no change, changed all vacuum lines - made a small difference, but still no improvement to idle, but car isn't running that rich anymore.