00 00... Fuel lines, hoses and tank(s): visual inspection for routing, condition and leaks
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2006 BMW 330Ci, 2005 BMW 330i, 2005 BMW 330Ci, 2004 BMW 330i, and 2004 BMW 330Ci. However, it is still accessible from the selected car via links, so may be relevant.
Check fuel lines and hoses and fuel system connections for traces of fluid.
Check fuel tank(s) and hoses for damage such as cracks, flattening etc.
Check that fuel lines are routed correctly.