Ok guys this is my situation

About 6 months ago I filled up the gas tank on my F4i. When I went to start it it wouldnt start and the fuel pump would not prime. Prior to this it was running perfectly fine. When i started tinkering with it in the parking lot as soon as I would lift the gas tank on the left side of the bike the fuel pump would prime and the bike would start but as soon as i lowered the tank back it would cut off. Eventually after doing this for about 30 minutes it stayed running and I didnt have a problem out of it until now. Now last week I filled the tank up and it started doing the same thing. Everything was fine before I filled up and not I cant get it to stay running. I assumed the tank was pinching a wire or vacuum line but I cant find one that looks like it would be. Anyone got any ideas?

 

mine did this not long ago after I had my tank off for maintenance and when I put it back on I put the fuel supply line (that runs straight up to the rail) upside down on the pump so it looked good when I attched it to the pump but every time I put the tank down the fuel line would fold over and kink not letting fuel through

so if your getting a prime sound I'd check there and if your not getting a prime sound I'd check the two wire rectangle plug on the left side of the bike (under the tank)
and make sure your connector has good contact sounds kinda like when you put weight (gas) in the tank its putting tension or pressure on a line or wire
I would start by checking those things

 

Either a line or wire is pinched OR there is an internal wiring problem with the pump that somehow fixes itself at certain angles. Either way you need to keep looking and perhaps have a friend help. Sometimes they catch things after you've seen it too many times.