2016 800 XM won’t start

Scottish88

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Wondering if anyone has any suggestions. My 800 etec won’t fire when I turn it over. It tries to fire but just dies or backfires and dies. I’ve ran it several times throughout the off season and even as recently as two weeks ago had it running in the shop. Only thing if done to it recently is had the primary clutch off. No obvious loose electrical connectors or rubbed wiring.
 

MK4TDI

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Second this, put some new fuel in along with a filter as well.
Fuel filter is a Wix 33095 Screenshot_20201129-234130_Gallery.jpg
 

Lightningmike

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My 13 did this a couple years ago. Start good in shop but not outside when cold. I believe it was the throttle position sensor that had to be changed.

I will have to try and find my bill and look for sure
 

Scottish88

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It’s inside my heated shop. If it was the throttle position sensor shouldn’t it still start fine and idle? I’m gonna start with some new plugs and go from there. Thanks
 

pfi572

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It’s inside my heated shop. If it was the throttle position sensor shouldn’t it still start fine and idle? I’m gonna start with some new plugs and go from there. Thanks

When you parked it did you do the electronic fogging process by chance ?
If you did your not suppose to start it until ready to use it .
I think like others have mentioned? Probably fouled plug .
 

Lightningmike

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It’s inside my heated shop. If it was the throttle position sensor shouldn’t it still start fine and idle? I’m gonna start with some new plugs and go from there. Thanks
Mine would start when warm but not if left outside below -20 ish. It would run for couple seconds and then die. Then it was like it was hydrolocked. They figure filled cylinder with fuel. Been good since anyway. Had me baffled
 

mclean

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Mine would start when warm but not if left outside below -20 ish. It would run for couple seconds and then die. Then it was like it was hydrolocked. They figure filled cylinder with fuel. Been good since anyway. Had me baffled


Mine still does that some if I have it on the sled deck and it is cold out driving to the staging area. Suppose to be a recall that fixes it but it never fixed mine
 

JMCX

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Do the fogging procedure at the end of the season and leave it alone. Maybe pull the rope once in awhile without starting to move things around. You're not doing the motor any favours starting it periodically.
 

AkNomad

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Mine does the same thing only when it's cold outside. I fogged it in the spring and it sat on my trailer up until about a month ago, tried to start it up and it would start, I swapped out the plugs and it fired right up but when I was out at my cabin a week ago when it sat overnight I had trouble getting it to start, it eventually did but ran a little rough until it warmed up a bit then it was fine. Took it for a rip and it ran great, no issues at all. I did put new fuel in it but i'm wondering if maybe there was water in the leftover fuel and it might have froze up in the filter. I left it at my cabin and will be headed up this Friday and will see how she does, hopefully it will start right up.
 
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