If it works like my 408 seems to, the fuel pump is either the original mechanical at the front of the engine block or will have been replaced by an electric fuel pump elsewhere, usually in the boot area. Regardless, there will be one pump - not a second one for the reserve.
The Reserve switch operates the solenoid on top of the tank. The solenoid switches between two different pipes that descend into the tank. The reserve pipe is longer than the one used normally and so draws fuel from deeper in the tank than the primary pipe can.
I hope this helps.
David
Last edited by dwomby; 13-03-25 at 05:19 PM.
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