cold start pops and sputters and almost stalls

[JDFarmBoy]

I've noticed since we bought ours that it runs rough when it first starts up, surges, actually died a couple times that I remember. Haven't thought too much about, it's seems to iron out in a couple seconds. Buddy of mine mentioned the same experience with his rig. After reading it here, the last couple of days I turn the key on for a few moments before firing it up for the first time that day. The normally rough starts have completely went away and it idles as expected.

 

[fletcher61]

My new 1500 Northstar runs terrible when cold starting. I let it idle for awhile, then try to start going in comfort mode and it pops, backfires shudders and almost stalls. Is this normal? I have many fuel injected machines, including Polaris 4 wheelers that don't have this problem. Or am I being picky? After the engine warms up to operating temperture the problem goes away.

Mine did that too until it had to go back to the dealer for recalls. They installed all the software updates and its much better

 

[Auctioneer]

I used high Octane no ethanol fuel in my XP 1000. If I hauled it on a trailer in cold temperatures, it was hard to impossible to start. When I switched to 87 octane the problem went away. I do not understand it I just know it works. I had the same issue with my 1500xd but 87 octane solved the problem.

 

[KC RANGER XD 1500]

I run 91 non ethanol in all my toys and small engines and have never had a problem with anything I have ever put it in. You can try to run ethanol to see if it works but it's never been a solution for me.........rather the problem.

Yes I agree no corn in my gas

 

[Clubin]

Is the check engine light coming on? If it’s not don’t worry about it, any misfire a o2 sensor will pick up a miss fire.

 

[Johnnie]

I use 87 octane no ethanol and my old 24 model was bad about bogging down and even backfire sometimes. It always started ok but I would let it idle until engine temp was above 100. My 25 model doesn’t do that but we are in warmer weather now. I do turn the key on and wait a few seconds before starting. That seemed to help my 24 model start easier.