My 1996 Honda CR250 wont start when its cold or hot, but you can roll start it

Chek the gasoline... replace and clean first the catborator

have you checked your float level?

Compression good? Timing of the spark is barely considered. That leaves fuel/air mixture. Too rich and she won't run, to lean and you get the same effect except the plug stays dry.

I thave the same problem with my civic ek 96 model the tranny work fine when its cold but when it get warm and i put it in P or N and D4 again it will stock in 1st gear I have to wait 3 to 4 hours to get cool and it work fine again. Hope somebody can help me. Thanks Eli

change the process: try more choke or less choke and check the spark plug it may be dirty

Try a Honda Dealer or ebay. Ebay has a lot of spares from time to time.
Hope that helps.

most likely main jets clogged.

sounds like you head gasket problem or maybe cooling system needs to be bleed.

your starter jet is plugged...u must have left the bike sit for a while with out draining the gas