Atc Starts Then Dies?

[AngusJustice]

My 2 stroke starts them dies right away. no idle. wont rev at all. any ideas Thanks!

[norms125m]

oil's too thick in fuel mixture cloggin up carb ports

[Tri-ZNate]

pull your plug and see if its fouled. Probably just needs a new plug if it just started doing this

[AngusJustice]

[QUOTE=norms125m;601839]oil's too thick in fuel mixture cloggin up carb ports[/QUOT Do you mean my oil gas ratio is to rich?

[Yamada]

What is the temperature outside? I think he means the cold weather affect the gas/oil premix and cause this symptoms.

[AngusJustice]

its been doing this all summer fall winter it does not seem to matter!

[AngusJustice]

gas cap off, good fuel flow, carb just rebuilt still a no go!

[badass70]

try shutting fuel pet cock off.and drain carb,you should get at least half a carb cleaner cap full of gas.if you do ,have a buddy squirt some premix gas out of an oil can into carb inlet slowly as you start it.wd-40 will work also .I'm betting is a carb problem .float hanging or something plugged.were all passages checked when rebuilt or just a kit? hope this helps Ron.

[AngusJustice]

compression good what about reeds any chance there?

[AngusJustice]

all passages check they said one jet was plugged just put it back on today

[badass70]

did you try pulling drain screw to check fuel flow past needle&seat?

[AngusJustice]

please explain undo the bottom of the carb then open throttle to see if i get good fuel flow?

[AngusJustice]

please explain undo the bottom of the carb then open throttle to see if i get good fuel flow?

[Erics350x]

Did you check for spark? Try a new spark plug? Does it pop, backfire, bog, ect.. need more info. Did it just die one day or did you buy this way?

[AngusJustice]

ran grat when i bought it then started doing this first i would run for only half hour then only 5 min now this and yes it does backfire once in a while!

[Tri-ZNate]

ran grat when i bought it then started doing this first i would run for only half hour then only 5 min now this and yes it does backfire once in a while!
but have you tried a new plug yet?

[AngusJustice]

Not yet what type plug is best ( Or Recommended) for ridding in southwestern ontario canada?

[Tri-ZNate]

Not yet what type plug is best ( Or Recommended) for ridding in southwestern ontario canada?

The one OEM calls for, whats the machine?

[AngusJustice]

1985 honda atc 250R

[AngusJustice]

ok ok I went out tonight when it was dark to check for a spark in the dark and there was a big blue one which was good so I put pre-mix down the sparkplug hole and wouldn't you know it she started right up so this leads me to believe the carb or the reeds are the problem so what do I do rebuild with kit or buy a whole new carb and reed set any suggestions? Thanks A.J.

[badass70]

nothing to do with throttle position.there is usually a drain screw or cap near bottom of carb.first shut off pet cock and check the amount of fuel that comes out .then with drain open ,turn petcock on and observe flow. should be nearly as much as open line was . what trike have you got ?

[badass70]

sorry I've got a slow conn. see you already answered some.I agree it could also be ign. even if you have good spark,I've had 250r's that done simular and just cleaned connections on cdi box wires.I'd still check fuel flow through carb.

[Erics350x]

if its backfiring, it sounds like a broke flywheel key. I would pull the carb and clean the jets out good, while you have it off look at the reeds for damge and set everything to stock specs. Then with the fuel line unhooked turn on the fuel valve to see if you have good flow. If that doesn't work pull the flywheel and check the key for damage.

[AngusJustice]

Well I think I figured it out I pulled The left cover and the Flywheel And The Crank Woodriff key Was Sheared! Thanks For You Help Erics350X I'll Let You Know For Sure Tomorrow When I Pick 1 Up!

[Erics350x]

Take your old one with you to any auto parts store and have them match one up.