Join Date: May 2008
Location: Nanaimo, BC, CANADA
help pls. bad idle
Hey all. been a while for me posting. looking for some help with a idle issue. 2002 with 12000km. Jardine exhaust and K&N, petcock mod. never adjusted or jetted the carb. ran great last fall. stored with tank empty and carb drained. does not get cold here just a little below 0 c in the winter.
so ... bike starts great, but when the choke is reduced after a minute of warming up or so the idle is great for 10-20 seconds then drops about 500 rpm and cycle repeats. frequently enough to stall (espically annoying at stop lights.) runs great at RPM. still great power with the jardine. no backfiring or surging that i can tell. idle had always been good at ~1000.
new fuel - no change
tank lid open - no change
methylhydrate - no change
removed air filter - dirty but no change
cleaned plug- moderate fouling but no change
pulled carb. float bowl had a bit of grunge. float is free, gaskets good, diaphragm good. jets no obvious crap. everything blasted with carb cleaner. -no change.
oil not changed yet but level looks good and changed in november.
so wadda think? i still wonder about the jets in the carb, one flushed really well into the lower bowl, but the other not. is this just normal or could it be plugged? maybe not carb? valves, timing etc. i'm still a bit of a noob with this bike. at least i can still ride it.
thanks for any input.
Last edited by doc3toes; 04-23-2009 at 11:42 PM.