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  1. 1991 E34 535i - Ran Out Of Petrol Now Fuel Pressure Regulator Stuck

    BMW 5 Series Forum - Technical Talk on the BMW E12
    I ran out of petrol,on filling up I noticed that the fuel was not coming out of the return pipe from the engine yet it appeared to be reaching the engine,I took off the fuel pressure regulator and put a jumper on the fuel pump relay to start the fuel pump only to immediately hear all the air...
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