Quote:
Originally Posted by JAJ
Going back to the OP's question, the E92 M3 has a fairly complex fuel pickup system that keeps working until you're pretty much on fumes. It sounds to me like there was some other problem that caused the error condition.
The fuel pump is at the bottom of a tubular inner reservoir inside one side of the saddle tank. It pressurizes the engine plumbing and the overflow from the piping goes through a venturi that siphons fuel from the other side of the saddle into the reservoir. If there's too much, the reservoir overflows and the cycle repeats. Both sides of the saddle have to be really low for the pump to run dry.
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Thank you for the information. So if I understand correctly, regardless of how severe one might corner, if the fuel level is relatively high (quarter tank), each side of the saddle should have sufficient fuel to not cause starvation?
I have not seen the issue again but do you think I should still take the car into the dealer?