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Hey guys, new here. I have a 2016 outlaw 110 that's 8 months old. It runs but will not idle and has no power. 1st the dealer said I had dirt in the fuel injector and gas tank, which I didn't believe because I have two Yamaha 700s that use the same fuel and gas can. They both are running perfect. Dealer told me it was fixed, I picked it up and it did run but that same day my son drove it for about 2hrs and it went back to the same issue. Took it back again and the dealer said the exhaust valve was bent, which also I thought was bs cause I could spray starting fluid in throttle body and quad would run.. and yes I told the dealer this, but they already took it apart before he told me what he thought was wrong. Which pissed me off but long story short they put it back together and also said the fuel was bad. Took 3 months to get it back and again 2hrs of riding, it won't idle and no power. Does anyone have a clue cause the dealer don't.. please help,,,
 

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Hey latebird, thanks for you input. What makes u say its the fuel pump? Cause it does run great for awhile then goes to crap but once it dont run the dealer mess with the fuel system and then it runs good again. Isnt the fuel pump in the tank. Any input is welcomed just lost at this point.
 

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2 hours exactly and then loose the power? what happens if you let it cool down? does it restart normal or the problem is still there?

it stays the same. the dealer does something to get it to run but it goes back to not running after about 2 hours. dealer had it for 3 months and said they ran it but soon as I picked it up and my son ran it, it stopped working. I watch my son ride it every time so its nothing he's doing.
 

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Hey latebird, thanks for you input. What makes u say its the fuel pump? Cause it does run great for awhile then goes to crap but once it dont run the dealer mess with the fuel system and then it runs good again. Isnt the fuel pump in the tank. Any input is welcomed just lost at this point.
Yep, the pump is in the tank - if it runs for t hours then won't restart, it it running out of fuel and then needing the fuel system re-primed?

Not good to let them run dry, but on the little EFI machines, all there is is the fuel pump, throttle body, injector, ECU and the electrical system. The injector sprays a constant stream of fuel into the air stream. As the throttle is opened the TPS tells the ECU to increase the amount of fuel to match the air flow. The battery voltage is the biggest problem followed by the fuel pump, injector, ECU and TPS. Come to think of it, if he's not running it fast enough and on the brakes frequently, the brake light might be drawing the battery down.

Try starting it by spraying starting fluid into the air filter - if it starts that way, next time try starting it by holding the throttle wide open and closing it slowly while cranking the engine.
 

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do you fill all the way up the thank before using the bike? Some ECU´s in cars put the engine in a "reduced power" mode under certain circumstances... engine getting too hot, low gasoline, low oil level, etc. Maybe the engine is getting too hot. Don't know if the bike is air cooled or liquid cooled. But seems that running for 2 hours and then going into that reduced power might be related with the engine getting too hot.
 

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These little machines are not that technical - they have very few if any sensors - it does have a fuel sensor, a "trouble" indicator, neutral indicator, reverse indicator and an EFI relay. I do not have a manual for this particular model, but will be getting one soon. It is air cooled, but I can't find a temp sensor anywhere.
 

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Discussion Starter #9 (Edited)
Hey latebird, thanks for you input. What makes u say its the fuel pump? Cause it does run great for awhile then goes to crap but once it dont run the dealer mess with the fuel system and then it runs good again. Isnt the fuel pump in the tank. Any input is welcomed just lost at this point.
Yep, the pump is in the tank - if it runs for t hours then won't restart, it it running out of fuel and then needing the fuel system re-primed?

Not good to let them run dry, but on the little EFI machines, all there is is the fuel pump, throttle body, injector, ECU and the electrical system. The injector sprays a constant stream of fuel into the air stream. As the throttle is opened the TPS tells the ECU to increase the amount of fuel to match the air flow. The battery voltage is the biggest problem followed by the fuel pump, injector, ECU and TPS. Come to think of it, if he's not running it fast enough and on the brakes frequently, the brake light might be drawing the battery down.

Try starting it by spraying starting fluid into the air filter - if it starts that way, next time try starting it by holding the throttle wide open and closing it slowly while cranking the engine.


Hey thanks for the info, the quad did start up by itself and it runs but it just seems slow,,, but after awhile it loses all power and don't idle, I don't think it's the battery cause the kid flys, but made there is something to it getting to hot cause the kid does do donuts with it but then he rides again
 

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Discussion Starter #10
do you fill all the way up the thank before using the bike? Some ECU´s in cars put the engine in a "reduced power" mode under certain circumstances... engine getting too hot, low gasoline, low oil level, etc. Maybe the engine is getting too hot. Don't know if the bike is air cooled or liquid cooled. But seems that running for 2 hours and then going into that reduced power might be related with the engine getting too hot.

The quad is air cooled, and the tank is always topped off before we ride.
There might be something to it getting hot but he does go about 30 mph most of the time.
 

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Discussion Starter #12
Anson, they found a wiring harness was rubbed though on the frame, but they said that they believed I had dirty fuel and the injector was plugged up, so I had them replace it. After that quad did run but was never the same. Sold quad for 1200 bucks and told the guy everything before signing over pink slip, he believed he could fix it. Good luck man,
 

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Thanks for the reply. I tore into it today and here are my observations so far.
Spark was good. Put a new plug just in case.
Fuel pump has good pressure and delivers plenty of fuel to the injector. My fuel pressure gauge didn't have the right fitting so I couldn't test the exact pressure, but I can hold my thumb over the hose fairly firmly and it will spray.
Removed the injector and inspected. Looked OK, but I'm no expert. I cleaned it with carb cleaner, air pressure and reinstalled. I connected electronics and tried starting it and it appears to spray a good pattern and what my untrained eyes sense as good.
Emptied fuel tank and put fresh gas (even though it had fresh before). Ensured I removed the anti-splash collar on the tank top when emptying all the fuel to make sure any bad fuel or debris was extracted. I poured everything into glass jar to inspect and didn't see any foreign debris in fuel.
Started it up and it seemed to run a tiny bit better, but it still stalls and runs erratically.
It seems to idle just great for a few seconds and then almost die or die. Same with riding, it seems to ride ok for a few seconds and then a sputter here and there. Stopping the machine and it will idle perfectly and then a few seconds later idle erratically or die.
Geez, why did I ever sell the little raptor 50?? That thing ran for 14 years without a hiccup and went through 4 kids and never missed a beat.
I'm basically at the end of my mech skills for this thing.
 

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Discussion Starter #14
Anson, check the wiring harness, mine did the same thing. It's not noticable it runs on the frame. I feel your pain. I ended up finding my son a raptor 125. It's a great quad no issues. Its a clutch that's the thing that takes a minute for the kids to learn.
 

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I cut all the zip ties to the wire harness, all lights, and handle bar wires. Inspected, and pulled everything away from frame and any metal. No joy.
Thank you for posting this as I would t have thought of this.
I’m going to post of video of what is happening in hopes you guys have some other ideas.
Again, thanks for the help.
 

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I have/had the exact same problem. I signed up to this forum just to reply to this because it was so frustrating. Ended up being an O ring where the fuel pump meets the fuel pump housing The O-ring was pinched. Reset the O-ring on the quad is now running perfect. This closes weeks of frustration and hours of working on the quad. Hope this helps other people with the same issue.. no work has ever been done to the fuel system so I’m curious if it was installed this way from the factory and finally lost its seal..
 

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I have/had the exact same problem. I signed up to this forum just to reply to this because it was so frustrating. Ended up being an O ring where the fuel pump meets the fuel pump housing The O-ring was pinched. Reset the O-ring on the quad is now running perfect. This closes weeks of frustration and hours of working on the quad. Hope this helps other people with the same issue.. no work has ever been done to the fuel system so I’m curious if it was installed this way from the factory and finally lost its seal..
I have the exact same problem with my sons 2016 sportsman 110. My symptoms are identical to the video above. This atv hardly has any hours on it. I have pulled the pump and everything still looks brand new. The o ring is fine. The pump seems to have pressure by putting your finger over the end of the hose. Has a strong spark. It is definitely getting worse tho and has gotten to the point in the last few days it won’t hardly start. Just spits and sputters. Also I noticed in the video above your starter seems to struggle when cranking. Mine does the exact same thing. Do these ATVs have weak starters? Like I said this atv has very few hours and it’s so frustrating. Has anyone been able to figure out this problem? I would buy a new fuel pump but I just don’t think that’s the issue. Thanks in advance!
 

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The same problem with an almost new outlaw 110 EFI, took it to the dealer twice, it runs for a few hours and back to stalling and no power. It seems like a factory issue.
 
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