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Hi guys and girls im in bit of need for some advice i recently purchased a 06 crf 250 its just had a new head gasket and water pump seals shaft now the problem im having is that it will start and idle but want rev ive checked all valves and clearences and all within spec so i then decided to strip the carb check for any blockeges etc all seem to be ok i then set the float back to the standard setting also for piece of mind changed all jets as thaught possibly mite be the issue but im at a stop now as i cannot get it to rev soons the throtle is open it dies now of it idle and i blip the throtle i can get it to rev but like i said all jets was changed and still the same issue also it will not start with the choke any help i would be much appreciated thank all

Hi Daniel69 and welcome to the site.
Can you tell us what jets you replaced and the sizes they are now.
How does it idle?
Have you tried adjusting the fuel screw and if you have how many turns out is it at the moment.