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View Full Version : problems adjusting idle on my 300ex



jermill79
04-06-2005, 06:56 PM
i started my 300ex to set the idle tonight and it was idleling very fast so i shut it off and turn the idle screw but i still could not get it to idle down. Does anybody know what i might be wrong or what i might be doing wrong? i also tore the carb down and used my clymer manual to set every thing i moved the needle down one slot to lean it out a little but it still idles fast

2muchquad
04-06-2005, 07:25 PM
make sure your cable isnt pinched,make sure sure cable adjustments arent holding the throttle in the open position,thats what li sounds like to me since its not responding to idle adjustments

ky300ex
04-06-2005, 07:26 PM
You could try adjusting the throttle cable. I had the same problem a few months ago because my throttle cable was too tight. I could turn the handlebars and it would actaully run above 1/4 throttle without even touching the throttle. I think there should be 1/8 inch of free play at the end of the throttle lever.

jermill79
04-06-2005, 07:28 PM
i checked the cable and their is no tension on it i even took off the side cover of the carb to check and it is still idling like it is about 1/4 throttle

jermill79
04-06-2005, 08:21 PM
would the timing have something to do with the idle it is set wrong my clymer says at ignition timing at f mark 17degrees@1400rpm and it says at full advanced 33degrees @3250 rpm that is for stock i have a .020 piston in it