Q: how many fuel pumps does a 1997 bmw 740il has on 1997 BMW 740iL

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I replace the pump on the passenger side, and I just need to know if there is another one.
(1) Answer
BMWs use 2 pumps a returning pump and a sending pump the one that goes bad is the sending pump, the pump is right under the rear seats the sending pump is right behind the driver seat, the best way to test it is to purge the fuel rail manually do it about 2 times with the switch one, make sure to have a rag to stop the gasoline from spraying all over you if the sending pump is bad after purging the valve a couple of times it wont spray, check the fuel pump relay before changing the pump.