sno scoot wont start!!!

[fasteddie]

Bought my son a sno scoot for xmas and up until xmas morning it ran great, started 1st kick every time. The only thing was after the sled warmed up real good it wouldn't idle. He rode it about 20 feet and it stalled and will not restart.

I cleaned the carb since and still wont fire. There is spark, does this mean that it can't be throttle override? The only thing I have done just before the the starting problem is turn up the idle screw considerably maybe a turn and a half.

any suggestions would be appreciated.

 

[Tod]

I would clean the carb again as the carbs on the scoots are pretty picky......I always put mine away cleaned and dry and one year it just wasnt good enough. Also is that black plug still in the bottom???? .....just making sure you did not loose it when you took the bowl off.

You may have just gotten a pice of junk from the tank or maybe the filter is breaking down, always store your sleds with an empty tank so the paper filter is not sumerged all summer. To be sure you should empty and flush the tank and replace the filter (the filter screws on from the front outside of the tank). and also clean the carb again.

Never had an issue with TORS on my scoot but did on everything else.....

 

[fasteddie]

Thanks Tod, I will clean again. Do you know what the compression should be?

 

[Tod]

no I do not but you can always check it and report back. I bet your motor is fine, i never heard of a sno scoot being wore out motor wise.....lol

Is it posible that the pipe could be cloged up??? You could help the pipe by removing the baffle at the end, plus it sounds better. I over foged mine once and it did not run well untill we got all the extra fogging oil out of the exhaust, must have taken a half a tank.......

 

[fasteddie]

I did a compression check and its 120 so I'm thinking everything is ok there. After cleaning the carb it still wouldn't start, after about 100 kicks I tried injecting some gas in the cylinder and it fired right away. but still wanted to stall even at high idle it would run at about 3000rpm for about 15 sec. then start to stall. If I feathered the gas it go back to 3000 for about 15 sec. then stall.
After stalling it would start right up with the choke. This happened about 5 times then wouldn't start and still won't start

Here is what I've done since all that cleaned the carb. every thing but the needle and seat. (I don't have a small punch to get the pin that holds the float on.) Removed the in tank filter and left it off (I was thinking that itwas restricting fuel to the carb) Checked for fuel at the end of the fuel line where it enters the carb. Took apart the fuel pump to check for any rips.

The sled is getting fuel, and spark, but just won't fire.
I'm taking it to the dealer today hopefully they still have the skill for 2 strokes. If anyone has any ideas please let me know just in case the dealer draws a blank.

 

[Tod]

man dont know what to say.......... how about checking the reeds???

compression is good!

 

[Sledsquatch]

It may be the float valve sticking in the up position preventing the bowl from filling with more fuel.

 

[vectorboy]

I had this same problem. Mine turned out to be the fuel petcock sucking in air. Whether or not it was sucking air through the petcock or around the fuel line who knows. I had one scoot that did not have the lines running to the petcock. I went straight from the tank to the fuel pump and got rid of the long lines to the fuel petcock. As soon as i did this she fired first kick. I bet this is your problem. It is easy to tell. Just take the airbox out and look at the fuel line running to the carb. If you kick it over and no fuel running to carb then this will be your problem unless the fuel pump is shot. Try it and see

Summitboy/Vectorboy

 

[PZ 1]

The only thing I have done just before the the starting problem is turn up the idle screw considerably maybe a turn and a half.

I don't know what the scoot carb was like. I had a Sno-Sport, but don't remember. Could you have turned the low speed mixture adjustment screw?

 

[Snowtraxx]

I have 5 of these little gems and on numerous occasions have had the same issue. I have had two different things cause it. One being the needle sticking and not allowing any more fuel in and the other was a bit trickier to find...Previous owner had connected the fuel cap vent to the carb vent, so after running for a little while it would create a vacuum in the tank and allow no fuel to flow. Hope this helps!