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Discussion Starter · #1 ·
RowdyForeman and I are having the same trouble. When the water gets over the tail pipe our bikes start sputuring and lose all power. If you let off the throttle a little bit then they will die. The water is not getting over the spark plug and the carb drain line is plugged. All plugs are greased and the bikes are not snorkled. We both have the same set up hmf pipe and jetted. Could the fuel mixture be off causing this? We have busted our heads trying to figure this out but no luck any help would be greatly appreciated.
 

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my bike is stock and it does the same thing. I have to keep on the gas to keep it running.
 

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I had the same problem. Until I extented my carb vent lines up to my handle bars. I also added a home made snorkle. Go to your local auto repair store and get about 8 feet of 3/16 vent tubing. There are two line, one on each side of carb. I just ran them under my plastics to the head light.
 

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yeah turning up the idle will help did that wiht my 450 and well i decided to turn it up a lot and not it idles at 2mph through water about up to the racks
 

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Discussion Starter · #6 ·
i heard several people talking about re routing the vent lines but I didn't think I was getting that deep. I know the water is not getting above my seat so how is it affecting the lines?
 

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the carb is under the seat and the lines are held downward on each side of the carb i just t-ed them to gether and ran them up along the frame under the headlight pod over to my left handlebar i'll try to get a pic posted to show you
 

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Not trying to jack a thread but I have a similar problem. When I hit about 1 foot of water at a decent (approx 10 mph) speed mine starts to die and lose power. I can keep it running and it clears up after a few seconds. If I go slowly through the same hole, no problems. I am splashing water on something that is killing it. Could this be related to the problem with the tail pipe stalling? I have greased most of the wiring plugs I have found including the spark plug.
 

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QUOTE ("jpollard":cwpmenrj)
Not trying to jack a thread but I have a similar problem. When I hit about 1 foot of water at a decent (approx 10 mph) speed mine starts to die and lose power. I can keep it running and it clears up after a few seconds. If I go slowly through the same hole, no problems. I am splashing water on something that is killing it. Could this be related to the problem with the tail pipe stalling? I have greased most of the wiring plugs I have found including the spark plug.
It could be the steam from the engine causing condensation to get in to the air box and carb. Yamahas have that problem bad.
 

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I think truegrit said he had had a problem with that before he put on his snorkel
 

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QUOTE ("Flip 500":20qenf0m)
I think truegrit said he had had a problem with that before he put on his snorkel
Yep it would sputter and hesitate, when I hit the water fast. I think it was the steam build-up around in the stock snorkel. No probs after the snorkel.

And mine will idle under water, but you have to bump the idle up a bit.
 

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I Had the same problem when I would go in about 2 foot of water. The steam from the motor would shut down the bike for about 10 to 15 minutes easy. The bike would final crank and would be fine .After racking my brain I Finally ran new a single carb.vent line to the handle bars but the next trip to the mud hole I lost a lot of power so I pulled the two lines apart and it was fine so I had to run the lines by there self. The bike is fine since then
 

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Run them under the headlight pod.. They are safe there..
 

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I am having a similar problem on my 2005 Foreman... I already re-routed all my vent lines, 2 carb lines and the diff vent tubes to the headlite pod. However, when I run a little deep, the bike quits, and starting is a problem. I have to choke it, and feather the throttle for about 5 minutes before it runs right again. It seems like I am still getting water in the bowl. At least that is what it seems like. If the vent is re-routed, does the drain tube HAVE to be plugged? I mean, if the drain screw is closed, then why the plug?
I did the same stuff to my Rancher, and it runs great with the engine submerged.
Am I missing something on the Foreman? Any suggestions would be appreciated!!!
 

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Bump
 

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when you hit the water it turns into steam goes into the intake of the bike from the stuction of the carb and blogs and stalls ,a snorkel is the only way to get rid of the problem for good . or drive fast through the water so the wind moves the steam away.
 

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Discussion Starter · #19 ·
This might be a long post but it will get your bike back and you want have this problem again. Ok I have read several things about the stock muffler always dying when under water its something to do with it not having enough pressure to blow the water out (hmf plenty of pressure). I don't know how true this is though. Next before i snorkled mine it was dying in any deep water even though it wasn't near the stock intake. After I got it snorkled it did great until this weekend when i got it up to the seat and it died (same problem you have) the carb ventlines needed to be revented. We pulled it back home re routed the lines and de electric grease on the spark plug. After all of this it will idle with it really deep and no problems. Also you do have water in your carb let it idle with the choke on a keep playing with your throttle and it will prime itself and you will up and going in no time( took mine about 30 min.) Or you can drain your carb. So to some it all up snorkle, re routed lines de electric grease and plug your carb drain and GO DEEP!!!!!!!
 

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I had these troubles when I got mine. I ended up doing the usual things, HondaForeman.com snorkel, rerouted the vent lines, 1/2 a tube of dielectric grease on the spark plug, battery terminals and airbox lid, and idled it up about 1/4 turn. Everything else on the engine is stock including the pipe. Since then, I've been in water to the headlight pod with no issues. I've talked to some other Foreman riders that thought water was getting into their airbox via the drain. They just greased it as well since its only held on by the spring clip.
 
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