how can i drain the fuel tank on my peugeot 406?

Do not attempt this unless you can find a way of safely disposing of the fuel as its hazardous waste and you will need something safe to drain it into as its a fire hazard. if its the bosch system the best way is to disconnect the supply pipe to the fuel filter and locate the fuel pump fuse in the engine fuse box usually 15amp blue in colour and put a battery power supply to the fuse to make pump run constantly which will pump the fuel out if its the seimens system you will have to disconnect the filter supply pipe to the filter and pump it out by hand using the hand priming ball on the fuel pipe

Pmt
December 2008