i just rebuilt my carb on my baja 150 and now it wont start at all before it would run but i thought it was runnin too lean

 

did you check to see if the float needle is stuck shut? try some ether in the air filter see if it starts up for a minute if it does then its down to the carb. You say rebuild did it come with a new pilot and main jets? the pilot jets seem to be a issue on theses quads i have serviced a few and the pilot jet is clogged. And trust me it doesnt take much to clog it

 

I overhauled my carb last year and had the same problem. Turned out I installed the float upside down. It will go together, but when you install the bowl it will push the float up and shut the fuel off. Took me a bit to figure that one out....

 

that wasnt it i cleaned it again and now it idles fine but after pressing a 1/4 of the throttle down it boggs down and will kill if i keep on the gas but if i let go it ll idle fine

 

recently i rebuilt the carb and it came witth a different needle when i first put it in it was the oppisite it would idle fine but if i gave it a little gas it would kill and if i pegged it it would run read the sticky and figured out it was running lean by covering the air intake and it ran better so i took the needle out and put some washers on it to raise the needle up now it only runs if i give a little gas too much gas floods it out please help could it be the needles too high?