What is the reason why a BMW 5 Series cannot use half a tank of gasoline?

1 Answers
DiEdward
07/29/25 9:37pm
BMW 5 Series cannot use half a tank of gasoline possibly due to poor contact of the fuel pump's float-like component in the fuel tank. If this issue occurs frequently, it should be repaired. Introduction to Fuel Pump: A fuel pump is a lightweight and compact pump, mainly categorized into in-line, distributor, and unit types. The fuel pump requires a power source to operate, and its lower camshaft is driven by the engine crankshaft gear. Details of Fuel Pump: The fuel pump features a housing made of aluminum-containing material and a movable molding part inside the housing. The movable molding part is at least partially made of a sinterable, iron-based alloy material containing austenite. The sinterable material of the molding part has a thermal expansion coefficient that is at least 60% of the housing's thermal expansion coefficient.
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