idleing too high
12-12-2007, 06:09 PM
#1
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idleing too high
my 1992 CBR 600 idles to high and the idle screw is not even touching. It starts out at about 2100 rpm then warms up and runs at 3000 rpm. Could somebody help me out or lead me to the right direction. The throttle slides are closing but the other slides dont close, is this my problem.
12-13-2007, 04:23 AM
#3
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Re: idleing too high
make sure the boot clamps are in the right place and not holding open the throttle assy. The black slide should have a "cut out" or small opening. The brass "butterflies" behind the slide should be extreamly close if not totally closed.
12-13-2007, 05:14 AM
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Re: idleing too high
yeah the butterflies do close all the way
12-13-2007, 06:18 PM
#5
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Re: idleing too high
i see 3 adjustment screws (1 between each carb)...........they seem to change the idle so i think this is my problem, would ne1 know what those adjustment screws are called, are they my air/fuel mix screws
12-13-2007, 06:39 PM
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Re: idleing too high
oh ****! thats the synchronizing screws! no wonder it dont idle right! check your choke cable to and make sure its not sticking.
12-13-2007, 06:41 PM
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Re: idleing too high
so how do i synchronize them to be right and where would i want it to idle at, and my choke seems to work good. the rod moves freely
Last edited by on_thegas; 12-13-2007 at 06:44 PM.
12-13-2007, 08:21 PM
#9
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Re: idleing too high
+1 carbs need syncronizing... a specific tool with mercury levels and vacum tubes is needed to do it right...
you can buy this tool, learn to use it and probably never need it again unless you keep a carbed bike for a long time... or you can have a shop do it... sucks but that is your options...
oh, thrid option is to see if a buddy has that tool and wants to hook you up!
you can buy this tool, learn to use it and probably never need it again unless you keep a carbed bike for a long time... or you can have a shop do it... sucks but that is your options...
oh, thrid option is to see if a buddy has that tool and wants to hook you up!
12-13-2007, 08:59 PM
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Re: idleing too high
thanks thats what i needed to know.....how much do places charge to synch carbs...... and where could i get a tool.....i just got this bike and will keep it a long time so i might just get one
12-13-2007, 09:05 PM
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Re: idleing too high
it should come with directions on how to use it... you will need a screwdriver to adjust the screws
adjust the outside screws til the left two cyliders match, then the right cylinders match... then use the middle screw to make all 4 match...
play with it a little, you will get the hang of it...
12-13-2007, 09:24 PM
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Re: idleing too high
no they go by # of cylinders... you will need a 4-cylider carb sync (come to think of it ive never seen anything BUT 4-cylinder ones...) there might be adapters that come with it for different size vacuum hoses but almost all bikes fit the vacuum lines that the sync comes with
12-13-2007, 11:15 PM
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Re: idleing too high
u can buy guages at K&L thru a dealer. get a service manual (maybe somebody will loan u one) when u set the screws first set the idle at 1300 then find the base carb manual will telll u which one it is. then like john said set the others till the needles match. it is easy, but only if u know what u are doin. if not its a bitch and u can make it worse. if u need help hit me up n I'll pm u my #.
12-13-2007, 11:42 PM
#17
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Re: idleing too high
aight cool ill get the tool and a manual.....then ill hit ya up if i need help after that.....ill have to buy one bcuz i dont know ne1 here in maryville yet.....just moved here a few months back
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