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Efi Smart Valve

6032 Views 3 Replies 4 Participants Last post by  billww
Is anyone having trouble with water in the fuel tank in EFI Arctic Cats? Our group of riders are having trouble with water in tank which seems to shut down once it gets in smart valves. Sleds range from 2000-2003. We have had water problems on all the sleds. Upon inspecting fuel tanks with a light, we have been finding an ounce or more water in tanks. We have tried fuel gas line antifreeze(Isopropyl)not Methanol. We have even tried buying fuel at different places, it seems every 3 or 4 tanks we acquire a water problem.

Is anyone else having this problem.
P.S. we also ride with people who have carbed sleds, who are NOT having any problems.
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I have had that problem also and I dont call them smart valves anymore,,, they are now called stupid valves in my book. We got it fixed the first time and then the second time I got ticked and cut the screen out so I could ride it back to camp and switch sleds,,,, well now I pull 130 psi on both sides instead of 145,,,, and it isnt a 5$ part (like it looks like),,, its closer to 40$ to replace. I put 100% new fuel in (totally drained the tank) and my buddy had got fuel at the same place, same time, that I did. He has an 06 f7 and mine is an 03 f7,,,, mine ended up closing as it got low,,, he had no problems. They say you can take the white disk out from behind the screen, and you can also drill a small hole in it,,,, doesnt make sense to me as that would just allow water in and defeat the purpose of having them in there,,,,
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I've had more water trouble with a L/C 'Cat than I've had with any Polaris fan machine I've used. I think it's partly due to how they route the fuel lines. The 'Cats we have come out of the tank and go down. Polaris goes high after the tank before going down. With the AC, especially with the L/C type, water would collect and freeze in the first dip it came to outside the tank.

I don't think one would be poorly advised to put in a good inline filter to catch "bad stuff" so it doesn't make it to the injectors as long as you can do that without fouling up the system. Heat exchangers under a fuel tank can melt ice in the tank which can re-freeze after it get sinto the lines, especially when the fuel level is down. Keep the tank full when sitting out, especially when the temps are quite low.
Also use gas dryers and injector cleaner or carb cleaners When temps hit 25 or more it:s a problem with all sleds .
and always on deep snow.
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