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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.
 

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2001 Spyder GT
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Congrats on the new car, and welcome to Club 3G!

I've never dropped the fuel tank myself. My guess is to watch out for all the evap hoses that might crack if you remove them.

Personally I'd consider cleaning and inspecting the fuel tank without dropping it. Sure, you want to be sure you got it nice and clean. But if you can check in in place, like with a camera or something, that would be ideal.

Also, you should inspect the fill neck while you're working on that area. There's a plastic guard inside the rear right wheel well that protects the fill neck from flying rocks, but it also traps rocks that grind like gizzard stones, and dirt that traps moisture. All of which leads to bad corrosion. It's a very common problem. If you have to replace it, now's the time to do it.
 
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