85' 250es won't idle, but runs great

[daren1093251]

My 250es after drowning it won't idle at all, starts fine, on choke it idles a little high, (a bit above the normal idle) but right after you take the choke off it just dies, not stutter, backfire, bog down, just boom dies. But if I hold the gas a bit while taking the choke off it runs good I can go through all gears. I tried adjusting the idle screw but it won't do a thing. The idle doesn't go up or down at all.

When I drowned it I changed the gas, oil, diff oil, emptied air box, drained carb, changed air filter.

Any ideas here before I start tearing it apart with no clue what i'm looking for? Thanks.

P.S : If the puddle doesn't look that deep, it probably is. :lol:

[Flyingw]

The primary jet is clogged. Here is my tutorial on rebuilding those carbs. Everything you need to know is in there. Order an ES/SX rebuild kit. Might as well refresh it since you'll have it apart.

http://www.3wheelerworld.com/showthread.php/161746-ES-SX-350X-Carb-rebuild-Tutoral?p=1257154#post1257154

[daren1093251]

Thanks man appreciate it wanted to make sure so I knew what I was looking for. Appreciate it so muxh

[archer45]

sound like the piolt jet is plugged as mentioned above take everything apart carefully run a fine wire through the brass jets and blow out with compressed air you will get it back to normal

[Yamawheeler]

If they carb is clean and is still doing it check the old fuel cack. Mine was gummed up so bad I couldn't use the reserve.

[whyat]

Great info it helped getting my old 85 125m running right.