Need help with long crank to start after driving and parking

[plasstik]

I have an 06 4.4 with 142k on the dash that gets 16-17 city/ 20-21 highway. I figure this info would be useful to know.



Issue,
At first, after fueling up I would need to crank, turn off, repeat and then my X will start. This situation presented/s 95-99% of the time. Ok not too bad. I can could still drive it like i stole it. No stalling, great pedal response, no other issue. That would be a lie, there are many issues with these old BMWs. Besides that.



A the beginning of 2023 that issue got worse. I drive, park for 15-60 minutes, and I would need to crank, turn off, repeat. Still no stalling, spuddering, great pedal response.


Parts changed (new from eeuro, bmwpartsdeal, fcpeuro, getbmwparts, some OE, some OEM, a couple of well known names)

- gas cap
- Leak diagnosis pump
- Dust filter
- Hose (connects to dust filter)
- Fuel Tank Breather Valve
- Fuel filter with pressue regulator

- fuel pump

- refurb'd injectors from eeuro
(All installed this month)


Cleared the codes, she started right up, no issues. (she does that after being parked for a long time)


Codes haven't come back, (yet) but after driving, and parking, I still need to crank, turn off, repeat, then she'll start. Again, runs fine.



I don't let the starter just turn until she starts because it's not (I don't believe so) an ignition issue. I cycle the key on and off, as to prime the system with fuel, and then she starts right up, no issues, and runs like a cheetah. Well, like a cheetah with 142k on her.



What am I missing?
What part needs to be replaced to keep/allow fuel pressure to remain in system?
Would changing the charcoal canister help?



Do I need to think outside of the fuel system to solve this issue?


If it's computer stuff, that's out of my scope of practice. If I can do a valve stem guide replacement, then I can fix this.