Went for a 30 mi ride today and the grizzly SPUTTERED!!!

Anyways, not really a big deal but i am wondering what caused it? All that happened what that i went through a water hole "up to the pegs" and after i came out...it did it. I was able to replicate this time and time again. The good part is, it only does it for a second....as soon as ya let off the gas and hit it again....its FINE!?!?

Is this caused by cooling the engine so quickly? Just trying to figure this one out...here is my thinking (i know it's stupid)...hitting the cold water and decreasing the engine temp...it is causing the engine to act like when on cold start-up. That is what it is actiing like anyways...

OK TECH guys....help me out here.....what the F**K

Jonathan

 

I think you are close, but no cigar. I think that with a hot engine, when you hit the water you are creating and ingesting steam into the air intake for the carb. I have seen this happen on other machines and I think that is your problem.

Just my opinion and it's worth about what it cost.

 

You are getting water in the spark plug boot. Easy fix; put dielectric grease in the boot every few months. Problem solved guaranteed. (kodiaks have the same issue).

 

Minehunter is right. I read a fairly large thread on this issue on another site. I was either ATV Nation or Highlifter.
The hot engine turns the water to steam which gets trapped within the engine area because of the shrouding around the motor. The carb then draws in the moisture ladden air causing the sputtering.
The Grizz owners were resorting to cutting the side panels issue to let the steam out as well as to combat the boiling gas issue.
Hope this helps........good luck.

 

Kodiaks have the same shroud around the engine. Both engines are at a 45 degree tilt for stability which makes the plug more vulnerable to water. It may be a little of both though but dielectric grease cured mine from sputtering. I'd rather do that then cut on my machine.

 

i'm confiming knuckleheads prognosis. Carb sucking steam...the dealer should be aware of this and i thought i also ran across it in one of the recent ATV magazines conducting a utility shootout.

 

highlifter is aware of this problem as is yamaha
the steam creates a change in the air/fuel ratio causing your grizz to sputter(factory defect)
i believe one of the fixes for this is to drill holes in the airbox and rejet accordingly
call highlifter for more info at 1(800)699-0947

 

I pretty much wrote this exact post last summer. I put the dielectric grease around the plug as stated earlier and haven't had a problem since.
I have a 2001 grizzly

 

Frogman, try the Grease. My Kodiac did the same thing, Put the grease in never happened again. When we going ridding? This weather Sucks..

 

Just cause a mag says it doesn't mean it's so. Some people want to over complicate the problem. Even though it's simplistic, the grease will work. All bikes have steam come up when hitting water, shroud or no shroud.