I'm about to strip the paint from my fuel tank so I can re paint it. Anyone got any advice on ensuring I have all the fuel vapor out before I hit it with the wire wheel?

So far I have fully filled it with water twice, making sure that the fill hole is the highest part and taking advantage of the fact petrol floats on water. Then washed it with soapy water 3 times. It's now drying.

Anything else I should do?

i just ran some water based degreaser through it and kept some suds in there

Fuel vapour has an upper and a lower flash point. If it smells like fuel vapour, then it can burn. If it just smells sorta a little bit like old fuel, but no vapour, then it is safe. You know, like when you get petrol on your hands and rub it off. Your hands smell like fuel for ages, but there is no vapour. Your hands dont burn.

it shouild be out by now

I usually light the oxxy torch up and flash it over the tank filler neck they dont go BOOM your OK

I am just re doing my Oval tank i grit blasted it back to bare metal and have started the paint process

Thanks for the feedback guys!