I have a 1997 Civic Sedan DX. Bought the car with a hole in the tank. The car was dumped, and the previous owner scraped it one too many times. I went and sourced a fuel tank at a local salvage yard and every single ek civic gas tank i looked at was different than mine. My tank had a twist off floater and the others had screw ons. Those tanks also had extra vac hoses or somethin' that my tank didnt have. I installed the new tank, capped off the vac or whatever lines my tank didnt have, and went to fill up. now it will only let me pump in lika a gal. per min. if i try to force the rest of the gas in it'll squirt gas bacc out of the neck all over the floor.. any ideas what ive couldve done wrong?

 

Tank needs to be vented properly. Too much pressure building up during fuel fill-up is creating the spill over.

 

Figured I wasn't getting enough vacuum ill rig up some lines and poke a vent at the top of the tank or somethin to get it to work correctly. Found out I had a rare gas tank. That's why all the other 96-00 tanks were different than mine