Training Wheel Hero
Join Date: Jun 2008
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Rusted tank turning into a world of nightmares
I bought a 2003 600rr from a guy who bought it new. It only had 294 miles on the bike, no mods. He had let it sit with 1/4 tank of gas in it, probably the second tank of gas that was ever run though the bike. I ride on the 1/4 tank for 2 nights, then fill the tank the next night (Thursday). Friday I ride it to work. During lunch I take it for a ride and it starts bogging really bad. On the way home from work, I dont even make it all the way home and had to get it picked up. I open the tank and find that it is rusted on the inside. So I take the tank off, take the pump out and do the Kreem re-coat kit. I cleaned the pump as well as I could and stuck it back in the tank. I filled it back up with good clean fresh gas and notice that it turns a little orange so I'm thinking there was still some rust dust on the pump. It runs slightly rough at idle up to 2500. I figure it's because of the small amount of rust in the gas. I ride all week on that tank and get it back down to 1/4 tank. I fill it to about half a tank yesterday to see if the orange color gets any fainter, but it doesnt. I go to ride it tonight and it sputters like crazy all the way up to 4K then opens up clear.
What would be the best course of action? I'm probably going to take the tank back off, drain the gas, replace the whole pump, and probably the plugs. Anything else it could be? From what I understand, it is hard to get anything past the pump screen, so I doubt there is any problem with the injector. I figure the bad gas has fouled one or more of the plugs. Any other theories? All help is much appreciated.