UH OH!

Most likely your rings are shot from it being swamped. If it was sandy water it just eats away at your motor.

How much smoke is coming out? Is it just on start-up? What color is it? How many miles are on your Foreman?

There is quite a bit of smoke when you throttle it not alot on startup... the longer it runs the heavier the smoke gets... the smoke is white... im not too sure how many miles are on my fourwheeler but i think a little under 500...

going to need new rings at the very least

Was your airfilter oiled/cleaned regular ..?

If the cylinder needs to be bored make sure the bore shop only uses #600 grit stones ... A more course bore will lead to faster ring/piston wear ..

QUOTE ("Honda Mechanic":2b7htubr)

Was your airfilter oiled/cleaned regular ..?

If the cylinder needs to be bored make sure the bore shop only uses #600 grit stones ... A more course bore will lead to faster ring/piston wear ..

Click to expand...

Man we need more on this forum like this guy! How would others know about this kind of thing?

I changed my oil filter 2 times since then and have gone through 8 or 10 quarts of oil just to get all the milky out... i am going to do one more change... i was told that it probably wasnt the cylinder head but i dnno... im going to get it checked out

My wife just sank hers Sunday. She has an 04 Foreman ES
just like yours. I changed her oil about 10 times. You may
not have changed it enough. Lets hope that is what it is. Hers
is good as new now. Good luck to you & hope it doesn't get too
costly.

well I swaped my 450 one time, and that was all it took, she smoked bad!!! Some people jus get lucky, depends how nasty the water is. The water I was in was very nasty, very gritty.

I'm going to try to do something new that I was told by an ATV Mechanic... then I'll try ya'lls ideas

I sunk my 2004 foreman after putting only 17 miles on it and all i did was run a little bit of engine flush through it and then changed the oil a few times drained the airbox and muffler, cleaned everything real good changed the air filter and cleaned the carb and it still runs great and now it has 1400 miles on it

I also sunk my foreman after a hurricane in 1999 when it only had about 100 miles on it. I turned it off as soon as the airbox went under water and pushed it back to my house (about 2 mile because I was by myself). I changed the air filter, spark plug, oil filter, and ran about 8 quarts of cheap oil through the engine until it drained out nothing but oil. After running the bike about 30 minutes, I changed the oil again for good measure. I have not had any problems since and now have over 2000 miles on it. I guess I got lucky also.