XSeries-forum

04 BMW X3 e83 225k 2.5M54 engine.
I last replaced the fuel pump maybe 7 years ago...strong model I think.
Current concern:
Only after a complete fuel tank fill-up do I get a slight stall, hick up or hesitation (less than 3 seconds) when I pull away from the fuel station going up a slight incline.

Could be the return valve on the injection rail side allowing fuel to flow back when it shouldn’t. Not sure how you test for that though.