[Dmitry at Pelican Parts]

Hello and welcome to the forum - I've attached a helpful DIY from our site to help you troubleshoot - if you have any other questions, feel free to post a Comment and we'll do our best to give you specifics.

http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E90/FUEL-Fuel_Pump_Testing/FUEL-Fuel_Pump_Testing.htm


-Dmitry