could somebody tell y my 250ex dies on me sometimes
it does it when i slow down or stop
and i have to rock it back and forth to shift down

 

It could be your idle adjustment or a sticky choke . Does it sputter or does the engine just limp down when shutting off or are you abruply stopping ( on hills ).
Is it's still under warrantee bring it back, hopefully you see it back before end of summer, darn dealers. The rocking part is due to the automatic clutch of the 250 while stopping in gear, no harm should come of it, you will just have to live with that one.

scott

01' Rancher ES
91' KX 80
looking for a 250ex for wife

 

i was just up north this weekend with my 250EX and after going over alot of hills up and down once i came to a stop it would stall out and it would take a few minutes to get it restarted. Think maybe the gas ran out of the carb.

 

it doesnt sputter or anything like that it just dies

 

I just bought a 2002 250ex and it dies on me only after i ride it hard for a little whyle[img]i/expressions/face-icon-small-confused.gif[/img]

 

My 250EX has done that several times. The first time I could not get it started, so I took it 1HR away to the dealer. When I took it off the truck to show the dealer, it started. Had them go through the carb and nothing was found. Since then it will still stall once and a while, but starts up shortly after. Sure would like to know why this is happening

 

Check your carb it mught be flooded,my old(2001) trailblazer did the same thing or it might be your airfilter try cleaning it and drying it really good

 

davidneedsspeed -

I know EXACTLY what you're talking about. I recently bought my wife a 250ex.

First, and this goes for ALL hondas: Honda jets their machines lean (even says so in the owners manual). You need to adjust the air/fuel mixture screw 1/2 to 1 turn out. It is located under the carb, right in front of the float bowl. On the 250ex it's easy, you don't even need a screwdriver. This will richen your idle mixture, allowing it to start much easier (won't even need to use the choke very often).

Second, and this applies only to the 250ex: Even after adjusting the idle mixture screw, my 250ex would idle very slowly. So, after you adjust the air/fuel mixture screw, you need to adjust the idle up (refer to owner's manual). Not too much, though, just enough to cure problem.

Finally, I too notice that after wheelies, gas drains out of the overflow tube. To fix, lower your floats a bit, this will stop the carb from overfilling.

Also (applying to all hondas/quads (except cannondale)) - if it dies from the float bowl overfilling, it usually means that the engine got a bit flooded. To start the quad after this happens, just open the throttle wide open, then start the quad. It'll take a few seconds before you get a response from the engine, just keep turning over (within reason) with the throttle wide open.

Hope this helps,
ogre

 

So, How do you adjust the float and are there any negative effects by doing so, like loss of power, etc?

 

[img]i/expressions/face-icon-small-mad.gif[/img]i would realy like to know why this happens i was just on a trip and it did it when i went slower or the rpm's went down whats going on with my quad?