This is the obvious place to start in any full system explanation. Unlike the tanks on early carburetor-equipped vehicles, it is a sealed unit that allows the natural gassing of the fuel to aid delivery to the pump by slightly pressurizing the system. When the filler cap is removed, pressure is heard to escape because the fuel filler caps are no longer vented.
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BMW ECU Programming
Description
We will be looking at the Electronic Fuel Injection system and about the Fuel Tank function.
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