250-500cc Wr250 dies when i give it throttle?

I went on my bike last week and after 1 lap of the enduro the bike died and would not start. I replaced the plug, the bike started fine but after another lap it died again. Any ideas what it could be? Alex

What did your plug look like when you took it out?

Any changes to the bike (hardware)?

Did you change oil brand or ratio, Elevation, humidity, major temp change?

Does the plug have agood spark when clean?

crappy pump gas?

Air filter dirty/pluged?

^ this and was any gas coming out of the overflow tube? maybe a float stuck open? with more info we will be able to help you better.

Try a new plug...sometimes they are bad when new.

carefully check the spark quality.ducati energia ignition [made in india]has had probs that cause poor starting & kick back when starting.mine so bad push starting down the biggest hill did not work.

was it wet?
my 360 had a similar issue it sucked in water through a split boot would be running fine and cough splutter to death 5 mins half a lap no lap.. worth a check if not.
if it was dry check privious posts all good

Dude, this thread is almost one year old. Where did you even dig this up from? I think either by now he has fixed the problem, or pushed the bike off a cliff... There's no need to reply to these super old threads.

Unless its helpful to someone having a similar problem?