i have cleaned out by carb. put it back together. i put the throttle cap back on and it starts and idels. I give it gas it continues to idel but nothing more. i let off the throttle and the engine dies. It will not start again until i press the throttle. Can anyone help?

 

Welcome to the forum! Carb slide in correctly? Throttle cable slack at the thumb throttle 1/8" only? Did you take the cable out of the slide(throttle plate and spring holding needle securely?) Did you remove the jets and replace securely? Air /fuel screw out about 1 1/2 to 2 turns? OPT

 

the slide and needle came out i put it back together; how do i know if the cable is 1/8 slack on it. i did not take out the jets

 

Adjuster for the throttle cable down from the throttle a bit. Plus just cleaning out the bowl or spraying up through the jets may not get em clean plus did you replace the needle and seat? OPT

 

did not repace the needle and seat

 

Try removing the jets and clean them up,especially the pilot jet and use an air compressor if you have one to blow out all the passage ways. OR cheap carb kits are available so you can rebuild it right. OPT

 

Just purchase same bike. Can't get carb right

Bike backfired and had no power, rebuild carb now bike won't start.

 

Welcome! start at the basics! Check that you have spark plus do a compression check. You must have at least a minimum 115 pounds compression for the 250 to run right. OPT

 

Compression good new spark plug.
Was backfiring and just didn't seem to have any power
Bike has starter issue so can only pull start.
Pulled on first pull no problem until I
Tore carb down and now it won't start

 

What is compression reading? does it have spark? Just look at these videos and see if you've missed anything also in the carb.
OPT