2016 800 XM won’t start

Scottish88 · Nov 29, 2020

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.

pfi572 · Nov 29, 2020

If old gas switch it out for fresh premium.

towerrigger · Nov 29, 2020

Change the plugs. My money is on fouled plugs.

MK4TDI · Nov 29, 2020

towerrigger said:
Change the plugs. My money is on fouled plugs.

Second this, put some new fuel in along with a filter as well.

Lightningmike · Nov 29, 2020

Was it cold when you were trying to start it?

MK4TDI · Nov 29, 2020

MK4TDI said:
Second this, put some new fuel in along with a filter as well.

Fuel filter is a Wix 33095

Lightningmike · Nov 30, 2020

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 · Nov 30, 2020

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 · Nov 30, 2020

Scottish88 said:
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 .

Scottish88 · Nov 30, 2020

No I didn’t fog it.

Lightningmike · Nov 30, 2020

Scottish88 said:
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

Lightningmike · Nov 30, 2020

I did plugs, fuel filter, compression test, even did a fuel pressure test. Just my 2 cents anyway. Hope you get it figured out

mclean · Dec 1, 2020

Lightningmike said:
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

Scottish88 · Dec 1, 2020

I put a new set of plugs in today and it fired right up. Old plugs were fouled. Thanks for the help

snopro · Dec 1, 2020

Scottish88 said:
I put a new set of plugs in today and it fired right up. Old plugs were fouled. Thanks for the help

Happy sledding!

JMCX · Dec 1, 2020

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 · Dec 8, 2020

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.

2016 800 XM won’t start

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