its got to be something simple. from my experience, ecus and dizzys dont go bad from sitting for 3 weeks. fwiw, id go through the electrical system and make sure that every thing is clean and that your electrical connections are properly seated. as for the fuel pump, you can hear if its working. if your really curious... you can pull up the carpet in the cargo bay (phillips screwdriver), remove the access panel (12mm socket or wrench) and the fuel pump is right there(you can pull it and check the sock in the tank, youll need a 8mm and be very carefull because if you break one of the studs... you swear... alot). if you pull the pump, its kind of a pita to get it seated again... and dont even get me going on the rubber gasket. but, i would doubt that your problem is fuel... i think its electrical... something simple that could easily be overlooked. since it has been sitting though, if schlack has built up... you may want to consider removing the air intake where it hooks up to the planium and try a little bit of starting fluid. it worked for me to make mine burn out a couple of quarts of oil that got into the intake when i rolled... made it burn it, would do the same for schlack.