Yamaha Grizzly ATV Forum banner

1 - 20 of 24 Posts

·
Registered
Joined
·
247 Posts
Discussion Starter #1
Cruising at about 45 mph, machine begins slowing down and not responding to throttle input. Comes to a stop and shuts off. I have less than 200 miles on the machine from a 2-day ride in the late fall when I bought it. The trails just opened up for winter recently so I just started riding it again. I had filled the tank with fuel late last fall, which was the first tank of gas I bought for it, and burned about half that tank last fall, and then a bit more a few weeks ago after the first good snow fall. This machine ran without issue until today. Rode about 7 miles to work without issue and parked it. On my way home about half way back is when this happened. I suspected anything from overheating, to being out of gas with a faulty gauge, to bad gas. I burned 3/4 of this tank of fuel, in all conditions such as 65+ degree weather, 30 degree weather, and now today it was under 10 degrees. After leaving it sit for over an hour, it fired back up, but only briefly before killing again. The starter will crank but it won't fire.
Any ideas? I added a 2R exhaust tip before my last ride a month or so back, but experienced no signs of problems until today.
What could be the issue?
 

·
Registered
Joined
·
1,242 Posts
Cruising at about 45 mph, machine begins slowing down and not responding to throttle input. Comes to a stop and shuts off. I have less than 200 miles on the machine from a 2-day ride in the late fall when I bought it. The trails just opened up for winter recently so I just started riding it again. I had filled the tank with fuel late last fall, which was the first tank of gas I bought for it, and burned about half that tank last fall, and then a bit more a few weeks ago after the first good snow fall. This machine ran without issue until today. Rode about 7 miles to work without issue and parked it. On my way home about half way back is when this happened. I suspected anything from overheating, to being out of gas with a faulty gauge, to bad gas. I burned 3/4 of this tank of fuel, in all conditions such as 65+ degree weather, 30 degree weather, and now today it was under 10 degrees. After leaving it sit for over an hour, it fired back up, but only briefly before killing again. The starter will crank but it won't fire.
Any ideas? I added a 2R exhaust tip before my last ride a month or so back, but experienced no signs of problems until today.
What could be the issue?
What was the outside temperature when it first did this today?
 

·
Registered
Joined
·
247 Posts
Discussion Starter #3
What was the outside temperature when it first did this today?
It was about 15 degrees.
But it was about 8 degrees this morning and ran fine for the 7 miles to my destination.
 

·
Registered
Joined
·
1,242 Posts
It was about 15 degrees.
But it was about 8 degrees this morning and ran fine for the 7 miles to my destination.
What temperature was it sitting in overnight, before your morning ride in to work? And is there ANY ethanol in the fuel that was originally in it?
 

·
Registered
Joined
·
365 Posts
I sure hope you don’t have any enemies where you work, I would hate to think that someone would do something like that to your machine. Other than that Considering how cold it was, you may have had some condensation in your fuel line that froze up, really hard to say, Air, Fuel, Spark, good luck in finding the problem and let us know what you find out that is what makes this site work so well!
 

·
Premium Member
Joined
·
10,651 Posts
Install a new plug and I suggest adding a couple ounces of injector cleaner to the gas. Take a can of good starting fluid.
 

·
Registered
Joined
·
247 Posts
Discussion Starter #7
A little more back story that I thought of...
The machine is stored in an open, unheated environment, with a Battery Tender connected - this is because of how cold it can get and batteries often don't hold their charge in cold weather. A couple of weeks ago, we had a 2-week long sub zero cold spell here in Wisconsin. During the 2nd week, I was curious since this is still a new machine to me, and wanted to see if I'd be able to get it to start. It was slow going, but after cranking on it with a putter now and again, it started up after about 20 seconds or so. Quit right away but that is typical as it usually takes 2 pushes of the button for it to run anyway. I cranked on it again and it again started after a few seconds. Quit again this time too but I chalked it up to the extreme cold. Cranked it again and gave it some throttle as it fired up this time. I reved it very gently to keep it running, and then it sat and idled. I let it run for several minutes, and then reved it gently some more and let it run a few more minutes yet. I was now confident that the machine would not leave me stranded in the cold. I shut it down and it has been shut down until today. Still same tank of gas, I didn't put in any additives or anything like that, and it was ethanol-free premium off-road fuel from kwik trip last fall.
Day started out great though like nothing was wrong.
 

·
Registered
Joined
·
247 Posts
Discussion Starter #8
What temperature was it sitting in overnight, before your morning ride in to work? And is there ANY ethanol in the fuel that was originally in it?
It was down to about 9 degrees overnight. It has ethanol-free fuel in it.
 

·
Registered
Joined
·
247 Posts
Discussion Starter #9
I sure hope you don’t have any enemies where you work, I would hate to think that someone would do something like that to your machine.
It was 100% positively NOT sabotaged by someone at work.
Other than that Considering how cold it was, you may have had some condensation in your fuel line that froze up, really hard to say, Air, Fuel, Spark, good luck in finding the problem and let us know what you find out that is what makes this site work so well!
I have been suspecting it is a cold weather related fuel problem all along.
 

·
Registered
Joined
·
19 Posts
You said you have a 2r tip on the grizzly, do you have a fuel programmer?
 

·
Registered
Joined
·
247 Posts
Discussion Starter #11 (Edited)
You said you have a 2r tip on the grizzly, do you have a fuel programmer?
No. After installing the 2R tip I rode it (also in the winter, and on this same tank of gas) about 20 miles and it ran great. That was about a month ago. Which was also the last time I rode it. When I had it idling to warm up when it was about 10 below zero a couple weeks ago is the last time it was running until today.
I am suspicious about that tip having something to do with it. Like I said, after I let it sit for a while it did start up again but only to die again right away. I am going to put the stock exhaust tip back on and try to start it again, and maybe it will stay running, in which case the 2R tip will go in the garbage. If that doesn't fix it I am going to add some fresh gas mixed with a little bit of injector cleaner. If that doesn't work I'm not going to screw around with it, as I will have exhausted all possibilities that could be my fault. It is under warranty and I will be taking it back to the dealer.
 

·
Registered
Joined
·
5,543 Posts
Try some gas line anti-freeze. If you have water in the fuel this will melt it and get you going. Just because it's not ethanol, doesn't mean it can't have water in it.

Replace the spark plug. Not real common to fail, but it does happen from time to time.
 

·
Registered
Joined
·
19 Posts
Almost sounds like water in the gas, condensation maybe if it was left with less then half while the temp fluctuates. I’m not to sure but will be following this to hear what the solution is. Good luck!
 

·
Registered
Joined
·
19 Posts
You could pull the plug and see what it looks like, if it’s wet you’ll know quick enough what the issue is.

**** didn’t see Dezz’s post. I’m suspecting the same as Him
 

·
Registered
Joined
·
247 Posts
Discussion Starter #15
Try some gas line anti-freeze. If you have water in the fuel this will melt it and get you going. Just because it's not ethanol, doesn't mean it can't have water in it.

Replace the spark plug. Not real common to fail, but it does happen from time to time.
Almost sounds like water in the gas, condensation maybe if it was left with less then half while the temp fluctuates. I’m not to sure but will be following this to hear what the solution is. Good luck!
You could pull the plug and see what it looks like, if it’s wet you’ll know quick enough what the issue is.

**** didn’t see Dezz’s post. I’m suspecting the same as Him
You guys are really helping me think through this. Thank you. An issue related to condensation and/or freezing has been on my mind, but was confused because it had been running for several miles before this happened. I mean, it doesn't freeze while it's being ridden, does it?
 

·
Registered
Joined
·
19 Posts
Sloshing of fuel could mix the water in and take a while for it to work through at a high enough concentration to cause failure. Just a thought, can’t be certain till you pull the plug and look. Although I think it would be more of a water issue then ice per say.
 

·
Registered
Joined
·
365 Posts
You guys are really helping me think through this. Thank you. An issue related to condensation and/or freezing has been on my mind, but was confused because it had been running for several miles before this happened. I mean, it doesn't freeze while it's being ridden, does it?
Yes it sure can!
 

·
Registered
Joined
·
269 Posts
Fuel won't freeze until about -40F, but it also won't vaporise properly to a gas that's needed for combustion, combine that with freezing air going thru the venturi(maybe icing up), oil that is sludging up & it's a wonder the little buggers start at all, but they do. Pity you can't get it indoors & put a fan heater in front of it for a few hrs to eliminate the cold as a factor, there are some good suggestions above so do try them, what about taking the a/cleaner lid off & use a heat gun/hairdryer to blow hot air into the motor & see if it starts ok?
 

·
Registered
Joined
·
1,433 Posts
It really sounds like water in the gas to me, either from condensation in the atv tank, or water from the gas supplier. Many years ago, before unleaded gas and long before ethanol gas, friend and I were heading home in his pickup, got about halfway, truck quit. We would wait a while, start it back up, go a mile or so, quit again, and so on like that until we finally made it. It had been real cold, then a warm up, then brutally cold again over the past week or so. It was water in the gas, freezing up in the lines. A big dose of gas line anti-freeze the next day fixed it. Also found out later that the gas station had water in their tank.
For the atv, I would drain all the gas out, get some fresh, maybe from a different place and try it out. If you get ethanol free gas, add a bottle of dry gas to it. Don't add dry gas to ethanol fuel. If you get ethanol gas, add Sta-Bil 360 to it.
 

·
Registered
Joined
·
5,543 Posts
In mu opinion, I think you have possible 2 issues at once here. Moisture in the fuel and a failed spark plug.

The absolute first thing I would do is replace the spark plug. Start troubleshooting from there. I have a feeling it will fire up.


Another thought though. Is this bike still under warranty?
 
  • Like
Reactions: mainehunter
1 - 20 of 24 Posts
Top