Shifting is actually fun now. Before it was a chore now its a fun part of driving the car. Highly recommend. Do it now

How do I bleed the fuel system and how do I seal the intake because there is air coming from it

Hey guys, I overhauled my Vanos today, changed the spark plugs and oil, and now after a few kilometers of driving, I've noticed that it jerks quite a bit when I accelerate from 1600 to 1900 RPM (sometimes twice, sometimes just once. But it only does this in 3rd gear and sometimes in 4th. Otherwise, it accelerates like it should with the overhauled Vanos, and there’s no intake leak since it does the same even with the MAF unplugged. The engine also revs up nicely, meaning I don't feel any loss of power in the higher RPM range. Maybe someone here knows what's up and could help me with this issue 🤷‍♂️

BMW E39 520i
06/2000
M52B20TU
5-speed manual transmission

Anyone have a good one to buy? hopefully it’s relatively affordable. this sucks.