Weird carb issue?

SXIPro

JM781 Big Bore
Joined
Mar 17, 2006
Likes
1,206
Location
Here on the 'X' mostly
#1
Just picked up an FX1 today and even after it warms up it won't stay running(or stumbles and dies) if I don't keep the choke pulled out about 3/8 of an inch. What would cause this? Plus every time I wipe out and it turns on its side a bit, it croaks.
 

Big Kahuna

Administrator
Joined
Jan 14, 2006
Likes
6,493
Location
Tuscaloosa, AL
#9
Pulling the chokes is causing a rich condition which the ski is liking. So go up on low speed. May also try larger N&S. Or smaller spring. Keep in mind that carb tuning is witch doctor poop, not my strong suit.
 
Joined
Jun 17, 2018
Likes
92
Location
Here
#12
Put a clear line on the input side to make sure you are getting fuel. Check the pickups in the tank. Can you keep it running by dripping pre mix into the carb? Starter fluid is bad unless it has top end lubricant in it, and even then I don't like it. Get a spray bottle and use premix, then you can keep the flame arrester on it, so as to not lose body hair.

Unless someone just threw a carb on it to sell, why would you start muffing with the jetting? Make sure the jets are stock sizes (if ski is stock), and set the screws to stock settings. Make sure your pulse line is solid, and the you have clean fuel lines and pickups.
 
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