No Start Issue - '18 AXYS 800

[SRXSRULE]

Pulled the rope, it fired for a second or two, then quit. Would not restart.

This is exactly what happens when it floods on start up. It usually acts up when the sled has been taken out of a shop, trailered a short distance and then restarted. They fire on the first pull and die (over fueling), then you keep pulling 4,5,6 more times and its still over fueling and floods the **** out of them.

You wouldnt be the first person to have this problem happen, and also not the first to think they didnt have spark... When they actually did and the engine was flooded the entire time. One example was a good friend of mine, he had his sled 1/2 tore apart in the back of his truck when I got there.

 

[Zrider]

SRX - What I can't figure out is why would the sled flood when I had no problem starting the sled and unloading it off my trailer at my house, then restarting and loading it on my bud's trailer 15 minutes later, then restarting and unloading at the trailhead an hour later, then getting dressed and ready to go 20 minutes later. We let the sleds warm up before we got dressed. I've never had a previous flooding issue with this sled. And then when we got back to my house, it started on the second pull when you would think it would have definitely been flooded with all the rope pulls we did at the trailhead and not start at all. It smoked like a sumbitch, then cleared up and ran clean.

 

[Badv2]

So how does a spark plug ground to create a spark when screwed into this non conducive aluminum.

 

[SRXSRULE]

SRX - What I can't figure out is why would the sled flood when I had no problem starting the sled and unloading it off my trailer at my house, then restarting and loading it on my bud's trailer 15 minutes later, then restarting and unloading at the trailhead an hour later, then getting dressed and ready to go 20 minutes later. We let the sleds warm up before we got dressed. I've never had a previous flooding issue with this sled. And then when we got back to my house, it started on the second pull when you would think it would have definitely been flooded with all the rope pulls we did at the trailhead and not start at all. It smoked like a sumbitch, then cleared up and ran clean.

2 possibilities, its either an issue with the air temp vs coolant temp as the sled is cooling down that creates this issue, OR is a problem with the tuning map.
It happens very rarely, but Ive seen it first hand 4-5 times.
The fact that the sled smoked liked crazy when it started at home confirms that it was flooded.
You might not ever have it happen again, but if you do just remember to hold the throttle wide open.

 

[formulaben]

So how does a spark plug ground to create a spark when screwed into this non conducive aluminum.

"Non conductive aluminum"? All aluminum I know if is very conductive.

 

[Sheetmetalfab]

2 possibilities, its either an issue with the air temp vs coolant temp as the sled is cooling down that creates this issue, OR is a problem with the tuning map.
It happens very rarely, but Ive seen it first hand 4-5 times.
The fact that the sled smoked liked crazy when it started at home confirms that it was flooded.
You might not ever have it happen again, but if you do just remember to hold the throttle wide open.

I’ve had it happen with multiple starts where the sled never gets run at load long enough to clear out the bottom end.

Floods the engine due to accumulation of fuel and oil.

 

[Badv2]

Zachly

 

[Zrider]

Thanks much for all the feedback, guys. We'll see what happens on the next go-round.

 

[Over budget]

Ummmm.

Aluminum transfers electricity just fine.
(That’s what many wires are made of)

yep you don’t understand what’s going on here

 

[Reid]

I had the same issue with my 2018 800 with 200 miles on it. Fired up for just a second not even long enough to turn the gauges on. I changed plugs and burn gas out of cylinders then she fired right up while holding some throttle and pulling it

 

[cateye5312]

We have a 2019 850 we're fighting the same issue on. Get bucked off hard which causes the tether to pull, floods it out and won't re-start until engine cools. Have no idea what's causing it and can't figure out the right combo to get it started again until it cools but once cooled it fires right up first pull. We can pull it a hundred times hot and it won't even try to start even with new plugs but wait 45 minutes and it fires right up. Ugh.

FYI - if your spark plug is fouled you won't see a spark or you will see a very weak, reddish one. When the plug is fouled, the spark can't bridge the gap and it will run to ground down the side of the porcelain cone so not seeing spark in this situation really isn't telling you that you have an electrical issue, it's just confirming that your plugs are not working properly. Also, according to NGK, once you foul a plug they are virtually impossible to clean so throw them away and spend a few bucks to get new ones. my 2 cents.

 

[Zrider]

cateye - In looking at different threads on here while trying to figure out what caused my no start problem, one guy mentioned the same thing happening on his sled that's happening on yours(wouldn't start till it cooled down). He said he put a handful of snow on the temp sensor(on the back part of the head on the PTO side), waited a few minutes and the sled started right up. Never said if he corrected the main issue or not. ?? Might save you having to wait 45 minutes to restart.

 

[cateye5312]

cateye - In looking at different threads on here while trying to figure out what caused my no start problem, one guy mentioned the same thing happening on his sled that's happening on yours(wouldn't start till it cooled down). He said he put a handful of snow on the temp sensor(on the back part of the head on the PTO side), waited a few minutes and the sled started right up. Never said if he corrected the main issue or not. ?? Might save you having to wait 45 minutes to restart.

Hmm, makes me think that maybe the temp sensor needs replaced if that does work. It would certainly explain some things. I'm having a hard time believing it's flooded since it starts on one pull when it cools off. One more thing that we'll try if it happens again. I've also heard that to clear a flood issue you should pull the kill switch hold the throttle at WOT and pull the motor over several times.