hey I have a 1998 Yamaha Grizzly and when I go riding threw the smallest puddle, the engine dies and takes about 5 minutes to start back up, sometimes it even needs a new spark plug. I can go threw deep puddles if taken slow at first, but the smallest little puddle kills it. I put Dielectric grease in the spark plug cap, along with a new coil and new spark plug wire. we also put on a new airbox, and its been the shop multiple times and the electric was torn apart, and no problems found. When i have it running, i shoot the hose right on the spark plug and cylinder and it will die. Does anybody have the same problem or have an answer or possible sugestion? Thanks

 

i have absolutely no clue how to fix ur problem kuz im mechanically declined..... but i just wanted to say welcome to the forum! lol. im sure some1 will give ya a logical answer.... just not me. good luck!

 

... Hummm

Are you spraying the air intake area when you do this? Just a thought have you peeked in your carb intake side and see if you are sucking crap into your carb? If you have a boot leaking and you suck water into the carb it would displace the gas ... Would explain the not starting thing. Kinda sounds like it to me. But I am a mechanical noob.

Still thinking about it... Are all of your intake hoses and vacume hoses connected to the carbs? (I dont konw if you even have vacumme hoses but really sounds like you are sucking up that water and pumping it into your bike) Have you checked to see if you have spark when this is occuring? I am willing to bet you do.

Hope that helps,

 

Are your valves within tolerance? It sounds like you are sucking steam. If you are running rich it takes very little steam to screw up your fuel/air mixture. If you are more on the lean side it isn't so bad. There are a couple things you can do to see if it is steam. Take your seat off and the airbox lid. Start your motor cold. It should idle fine with the airbox lid off. Turn your hose on low and run the stream of water around on your motor. Don't spray it, justr let it run slow. If it's an electrical short, which I doubt, you should be able to find it.
As the motor heats up and the water starts steaming, the steam should escape without too much getting sucked into the motor.
If the engine keeps running then put your airbox lid and seat back on and run the water on a warm motor but not on anything elaectrical. If your motor dies then you know it's a steam problem.
More than likely your fuel mixture is bad or your valves are out of tolerance or both.

 

I read your post , but it doesnt say you replaced the spark plug cap , I would try that first as I had the same problem , since it is a cheap item , it cant hurt to try that first.
Good luck.