Fuel Delivery: Notes

WARNING: This page does not describe the selected car, but rather 37 other vehicles, including the 2005 BMW 760i, 2004 BMW 760Li, 2003 BMW Z8, 2003 BMW Z4, and 2003 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For fuel system pressure testing, see BASIC DIAGNOSTIC PROCEDURES article.

Before any service work is performed on any fuel system related component, always adhere to the following:

Observe relevant safety legislation pertaining to your area.
Ensure adequate ventilation.
Use exhaust extraction system where applicable (alleviate fumes).
Do not operate the fuel pump unless it is properly installed in the fuel tank and is submersed in the fuel (fuel lubricates the pump).
Always wear adequate protection clothing including eye protection.
Use caution when working around a hot engine compartment.
During fuel system repair that involves "sealing rings" always replace them with new copper rings only.
BMW does not recommend any unauthorized modifications to the fuel system. The fuel system is designed to comply with strict federal safety and emissions regulations.
Fuel quality should always be considered when diagnosing a driveability complaint. The type of fuel, proper AKI rating, impurities and moisture are not factored by the ECM.