PLEASE HELP!!!!!

I HAVE A 2002 FOREMAN 450S AND I HAVE A INTERMITING PROBLEM WITH IDLEING, IT WILL IDLE PERFECT FOR A FEW MINUTES THAN DROP OFF AND START IDLEING REALLY LOW, AND GIVING IT THROTTLE DOES NOT PICK IT BACK UP TO PROPER IDLE IT JUST SITS THERE AND CHUGS AND SOMETIMES BACK FIRES WHEN IT SHUTS OFF I RESTART TO A PERFECT IDE FOR A FEW MINUTES THEN IT DROPS OFF AGAIN. SOMETIMES I HAVE TO START IT AT FULL THROTTLE, I HAVE ALREADY BEEN THROUGH THE CARB TWICE AND IT IT CLEAN, NEW GAS,PLUG,

CAN ANY ONE HELP ME ON THIS???? THANKS ALOT TODD

 

Are you sure it is not just cold? Mine acts similar when it's being started for the first time of the day. The choke cable automatically retracts itself, so you have to hold it up manually for about 30 secs. then she runs pretty good. What outdoor temp are you doing this in? I'm talkin about 10 below for my problem, which I think is just the nature of the beast.

 

Does this problem occur as it warms up, or at any time?
If it idles fine until it gets warm, the idle mixture is too rich.
1/4-1/2 turn on the mixture screw will likely fix it.

If it occurs at various times, cold or warm, check your connections
between the air filter and the carb. A leak there will lean out the
mixture and cause rough idle, especially when cold. Loose clamps,
cracked or torn manifold, ect.

Check your air filter? Clean it?
Be careful putting too much oil on the filter, it will cause rich mixture too.


Let us know if any of this helps.

 

im in florida arround 80 degrees and it does it even after its warm up for a hour or so

thanks for your response

 

it intermits from when its warm and cold, as long as its abouve idle from holdong it there on the throttle manualy its fine, just when it trys to idle by itself it drops off and spudders, ive check everything you mentioned and all is fine, if i throttle it up to where it runs fine when i put it in gear it jumps forward from being at a higher rpm than normal idle and it will run fine till i come to a stop or a idle

any other ifo will be greatly appreciated!!! thanks todd

 

Check your spark plug color and see if it is running lean or rich when idling.
Black= rich
white= lean
tan=OK

 

how long has it sat for that it requared the carb cleaned. Have you soaked the carb. sounds like the tube that is under the vacum piston inside the carb that goes to the bowl flush that out with carb cleaner good. Then make sure to check that you choke plunger in the carb is going all the way shut

 

oh yeah I hope that you didn't loose the piece that goes on top of the emushon tube that the needle slides in. If you look in the carb you should be able to see it stickin up in the carb bore

 

it didnt sit at all when i bought it it ran perfect after ridding 3 times it started doing this

 

no its still there