Hey Guys,
I have a 2009 Grizzly 700 with 560 miles. It has ran great up until this last weekend. It started fine but suddenly stalled. I thought it was just a freak thing and continued to ride it where it began to bog and act odd. After a while, It finally started to run right through out the day only stalling at idle maybe 1 or 2 times. I had it out a week later and now it is doing the stall at idle thing and bogs when i am hard on the gas. What is the problem? Maybe need a new spark plug (stock)?
Thanks guys

 

sure, a new spark plug wouldn't hurt after you clean the carb/jets......and air filter.....fuel filter.....inject some carb/FI cleaner in fuel tank for next tank full....

 

Still bogging

 

Have you changed/re oiled your air filter recently?

 

Yes. spark plug and filter are good. Do you guys think it is something electrical?

 

i have a 450 grizzly, i've never messed with a 700, SO, if it's a carb, i'd say the bogging is 95% due to the jets becoming plugged. least that's been my experience on all of my quads.........

orifices on jets got to be super clean, even a little grit or whatever will plug it up.

 

He has a 700, EFI, no jets. Any diagnostic codes coming up on the display? Do you have a lot of pressure building up in the gas tank? a lot of Grizzly's had a recall for the rollover vent valve sticking shut, mine got so bad,it almost blew the cap out of my hand and sprayed gas out, but mine ran fine. Maybe a quick trip to the stealership to see if the ECU is faulting for anything.....don't you just love all the modern doo dads on our quads?

 

His is a 09 so the Gas pressure thing is NA.

 

Do you jump / wheelie your ride?. Do you mud bog?. Does your ride sit alot?. Without knowing this, here are my WAGs (Wild *** Guesses), Check your airbox plastic for leaks and cracks. I read once of a quad bogging due to a piece of the air filter bottom being sucked part way into engine. If you mud, or ride sits, check for water in fuel, check fuel filter, it may be full of water. Pull body plastic and check wiring for corrosion, cracks, chafing, shorts, etc. My .02

 

A buddy we ride with had the same issues with his 2010 Grizzly 700. Dealership tried everything and it ended up being a bad throttle body. Luckily his was under warranty.