idling issues

grego · 07-23-2011, 10:00 AM

hi all

i previously posted about the choke cable problem. well to totally eliminate the possibility i replaced it yesterday. the one i took off moved freely, but it eliminated it as one of the possibilities. when i start the bike with the choke off it goes up to 2000-2500 rpm. as i sit there putting on my gloves some times it slowly falls to normal idle. if i engage the choke it will go up to 4000 rpm. if i rapidly move the choke on and off it will go down to normal idle as well. when i stop sometimes it idles around 2000 rpm and other times it idles at a bouncing 1200-1400 rpm which is what it normally does for some reason. its not steady at that rpm. the engine sounds like its steady but then again what do i know. any ideas as to what the problem might be ?

safe biking

grego

geezer · 07-23-2011, 10:07 AM

your bike has been messed with, i remember your aftermarket muffler. chances are the last owner didnt adjust the carb right. my bike would have a crazy idle sometimes too till it moved the mixture screw down to only 2 turns out. now i have a normal idle that never bouncing around. so your going to need a short tiny flat head screw driver to easeily do the adjustment. and hopefully the plug that covers the mixture screw has been drilled out.

grego · 07-23-2011, 01:23 PM

geezer

you may be right...now the questions where is this adjustment and if its not drilled out that must mean it wasn't fooled with.

thanks for your response

safe biking

grego

Water Warrior 2 · 07-23-2011, 02:33 PM

Does anyone have before and after pics of the air/idle screw ? A visual will sometimes help the most.

geezer · 07-23-2011, 03:27 PM

well simply put if the cap was removed it would be the only adjustable flat headed screw on the bottom off the carb. now if the cap is still there then its alittle more confusing. its the cap closest to the engine, right next to the intake manifold. i might take a pic to help you out

geezer · 07-23-2011, 04:09 PM

just cause i love you grego

blaine · 07-23-2011, 04:48 PM

Your idle mixture screw will need to be turned out.(counter clockwise).Your running too lean,that's why your idle fluctuates so much.
:cool:

geezer · 07-23-2011, 05:11 PM

to rich couldnt cause the same issues? mine was at 3 turns giving me probs. now at 2 its fine. its a carb, im sure the possiblities are endless lol

grego · 07-23-2011, 06:06 PM

hi all

thanks blaine and geezer you didn't have to take the carb off just for me !! but the pic sure does help..is there a magic formula.. like turn it in until it seats and then back it out x number of turns ??

thanks for the quick response will look to see if still capped or not

safe biking

grego

geezer · 07-23-2011, 06:24 PM

i was double checking my float height so it wasnt just for you! :neener: different set ups work on diff carbs man its kinda hard to give yu a set number of turns. blane will explain betterthan i can

07-23-2011, 10:00 AM	#1
grego Member Join Date: Apr 2011 Location: anaheim california Posts: 96	idling issues hi all i previously posted about the choke cable problem. well to totally eliminate the possibility i replaced it yesterday. the one i took off moved freely, but it eliminated it as one of the possibilities. when i start the bike with the choke off it goes up to 2000-2500 rpm. as i sit there putting on my gloves some times it slowly falls to normal idle. if i engage the choke it will go up to 4000 rpm. if i rapidly move the choke on and off it will go down to normal idle as well. when i stop sometimes it idles around 2000 rpm and other times it idles at a bouncing 1200-1400 rpm which is what it normally does for some reason. its not steady at that rpm. the engine sounds like its steady but then again what do i know. any ideas as to what the problem might be ? safe biking grego Login or Register to Remove Ads
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07-23-2011, 10:07 AM	#2
geezer Senior Member Join Date: Mar 2011 Location: dahlonega GA Posts: 563	Re: idling issues your bike has been messed with, i remember your aftermarket muffler. chances are the last owner didnt adjust the carb right. my bike would have a crazy idle sometimes too till it moved the mixture screw down to only 2 turns out. now i have a normal idle that never bouncing around. so your going to need a short tiny flat head screw driver to easeily do the adjustment. and hopefully the plug that covers the mixture screw has been drilled out. __________________ 99 gz 250 and a currently dismantled fzr 1000
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07-23-2011, 01:23 PM	#3
grego Member Join Date: Apr 2011 Location: anaheim california Posts: 96	Re: idling issues geezer you may be right...now the questions where is this adjustment and if its not drilled out that must mean it wasn't fooled with. thanks for your response safe biking grego Login or Register to Remove Ads
	0

07-23-2011, 02:33 PM	#4
Water Warrior 2 Senior Member Join Date: Dec 2006 Location: Squamish B.C Canada Posts: 11,409	Re: idling issues Does anyone have before and after pics of the air/idle screw ? A visual will sometimes help the most.
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07-23-2011, 03:27 PM	#5
geezer Senior Member Join Date: Mar 2011 Location: dahlonega GA Posts: 563	Re: idling issues well simply put if the cap was removed it would be the only adjustable flat headed screw on the bottom off the carb. now if the cap is still there then its alittle more confusing. its the cap closest to the engine, right next to the intake manifold. i might take a pic to help you out __________________ 99 gz 250 and a currently dismantled fzr 1000 Login or Register to Remove Ads
	0

07-23-2011, 04:09 PM	#6
geezer Senior Member Join Date: Mar 2011 Location: dahlonega GA Posts: 563	Re: idling issues just cause i love you grego __________________ 99 gz 250 and a currently dismantled fzr 1000
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07-23-2011, 04:48 PM	#7
blaine Senior Member Join Date: Feb 2010 Location: P.E.I. Canada Posts: 3,784	Re: idling issues Your idle mixture screw will need to be turned out.(counter clockwise).Your running too lean,that's why your idle fluctuates so much. :cool: __________________ If at first you do succeed, try not to look surprised.
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07-23-2011, 05:11 PM	#8
geezer Senior Member Join Date: Mar 2011 Location: dahlonega GA Posts: 563	Re: idling issues to rich couldnt cause the same issues? mine was at 3 turns giving me probs. now at 2 its fine. its a carb, im sure the possiblities are endless lol __________________ 99 gz 250 and a currently dismantled fzr 1000
	0

07-23-2011, 06:06 PM	#9
grego Member Join Date: Apr 2011 Location: anaheim california Posts: 96	Re: idling issues hi all thanks blaine and geezer you didn't have to take the carb off just for me !! but the pic sure does help..is there a magic formula.. like turn it in until it seats and then back it out x number of turns ?? thanks for the quick response will look to see if still capped or not safe biking grego
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07-23-2011, 06:24 PM	#10
geezer Senior Member Join Date: Mar 2011 Location: dahlonega GA Posts: 563	Re: idling issues i was double checking my float height so it wasnt just for you! :neener: different set ups work on diff carbs man its kinda hard to give yu a set number of turns. blane will explain betterthan i can __________________ 99 gz 250 and a currently dismantled fzr 1000
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