Now I've gone and done it. I just purchased a 2000 Mitsubishi Eclipse RS that sat for 7+ years. Got to towed to the house and began process of getting it back to running condition. Ran some tests and found fuel pump shorted. Removed fuel pump and found heavy contamination in the tank. Float for sending unit rotted off (somewhere in the tank now) and dark red substance in tank. My guess is a mixture of rust from corroded fuel pump assembly and varnish. Ended up pulling gas tank last night so I can flush the tank completely. Found the rest of the float (Yay!) in the tank and removed. Evap canister is bolted to the tank which sucks getting everything out but now it is flushed and drying. Awaiting new fuel pump and sending unit. Has anyone here had to drop a tank out of a 3rd gen Eclipse before? If so, what challenges did you face.