Also check the vanos check valves on the side of the engine, they are meant to keep oil in the vanos, but get tired and oil drains away, and the exhaust one gets covered in muck, replaced both, and vanow works brilliantly. cheap from BMW!

Brilliant videos mate. Worked on bemmers for ages and you still surprise me every now and then. Goes to show,you never stop learning. Thank you.

I had an issue with my N55 blowing codes for timing. I listened to your suggestion and did not suspect vanos solenoids as both would not go at the same time. Turned out it was the coils. Put new ones in and codes are gone. Thank you for this great video!!!!!!!!

DR Dean loves the N52 engine

Dean is the best! You have saved me a tonne of money before Christmas.

Thank you! Very insightful.

Thanks brother, very helpful 👍🏾

Finally someone on UTube that understands how integrated the BMW system is. Awesome list this is why I like working on the BM it makes you think, one that a lot of people miss is if the car has been played with a lot the wiring harness can have you chasing your tail, I have had a handful of cars that all the problems have been some broken wires because the previous  mechanic been rough pulling connectors. Dean love your videos keep them coming.

Well thanks for start .. keep in touch .,

Mate, what a great video. You just helped me a lot.

Very informative video on the N52 engine, Dean! Even though I have a M54, I still find these to be well worth the watch!

Good info to narrow down the problem. instead of firing the parts cannon.👍

Fantastic video as usual m8

great video bro, I was having a super rough idle as if it was misfiring and it finally threw some camshaft position codes with I seen related to the vanos. I decided to do an oil change and clean the vanos solenoids and what do you know Im missing the plastic tree inside the oil filter. Replaced it from the dealer $80 and shes purring now. Ur a beauty mate

Awesome thanks.

Great video thanks for the info. Can you do a similar one on the N73 engine?

how do we "check" those things your saying to "check".

i have a 2d5a. im completely new to bmw, there was about 13 faults when i got the car, now im down to 4 one being 2d5a. the car runs normally as far as i know, no rough idle.

We need a video of you on n54 motor fixing 2a99 code this is a nightmare for people

Another good vid Doc!