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2000 WR400 Water Crossings

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Just returned from a week of riding in Colorado with my 2000 WR400, and had some problems at water crossings. It seems that when I cross streams or rivers about axle deep or more, the motor will die. It usually will restart fairly easy after one or two kicks, but I would like to cure the problem. There is no water entering the air box, which leads me to think that the problem is electrical. The speed that I cross the water does not seem to matter either, as the problem occurs at super slow speeds as well. Should I spray WD40 on the plug and coil wires before riding for the day? Other than that, the bike rips and is a blast to ride, even at 12,000 feet elevation. I don't recall having this problem in previous years of riding the bike. Any thoughts?

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do a search for swamp proofing or vent tubes, you'll find tons of info like I did.

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Thanks for the info. I did not realize that there was so much discussion of the subject. Next time I'll do a search before I do a post.

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