Dragster, thought I had emptied a long time ago and replaced with gas...not! All lines cleaned up but how to clean fuel tank without removing it. I would have to removed part of seat stuff, radiator, co2bottle etc etc..Think gas and try to swirl it around will do it? Thanks

I would go buy regular gas and do exactly as you are thinking. I would even put a filter in front a a fuel pump and circulate it back into the take. use a small line so the pressure almost pressure washes the tank.

^^^^^^^^^^^ this and for $7 add a 16 oz can of Seafoam to the gas.

Great idea mark !!!

For some reason my post didn't post. I have a pump setup I use for my diesel tractor, intact I used it to empty the tank but didn't think of what you suggested. Good ideal. Now what is seafoam? What does it do and we're to get it. Thanks guys for the help.