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i've just recently colotuned and synched the carbs. i've always had touble trying to get the carbs tuned. that is until my colortune arrived. still having a bit of trouble with a rough idle. if i idle the bike at 1250 to 1300 she runs fine. if i try lowering it to 1100 it will become fairly rough with the needle usually jumping between 1150 and 950. can't figure out why. colortune still looks good at those rpms.
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You could have a minor air leak somewhere, hose, airbox seal, exhaust..ect.. and although the colourtune is great a lot of people swear that it gets things close but not perfect. Plug chops and fastest idle can sometimes improve things, but I like you like my colourtune. As well your tack may be off slightly.Rob
1983 1100ES, 98' ST1100, 02' DR-Z400E and a few other 'bits and pieces'
Are you on the GSR Google Earth Map yet? http://www.thegsresources.com/_forum...d.php?t=170533 -
definately no leaks. everything is brand new and i've double checked everything. i agree the tach could be off. but u can definately hear the rough idle. no popping through the exhaust or the intake though. just sounds rough. almost like a random miss. i still have to double check my timing but i wouldn't think that it would cause an issue only at those rpms.Comment
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Have you tried the fastest idle method?Rob
1983 1100ES, 98' ST1100, 02' DR-Z400E and a few other 'bits and pieces'
Are you on the GSR Google Earth Map yet? http://www.thegsresources.com/_forum...d.php?t=170533Comment
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Valves done too? Have you resynced since the colortune? Dont know if the adjusting would require a new sync..but throwing the theory up in the air...MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.Comment
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If you're just setting the air or fuel mixtures you won't need to resynch the carbs. Only after a valve shim job or a carb rebuild of course. You've got some great advice so far, but really it won't hurt the bike if she's idling at 1250...it's not like it's gonna to stay there longOriginally posted by chuck hahn View Post
Rob
1983 1100ES, 98' ST1100, 02' DR-Z400E and a few other 'bits and pieces'
Are you on the GSR Google Earth Map yet? http://www.thegsresources.com/_forum...d.php?t=170533Comment
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carbs are synched. valves are good. tried the highest idle for a year before getting the colortune and could never see or hear enough of a difference to tell whether i was on or off. i know it won't hurt it, but it just bugs me when something is supposed to do one thing and it does something else. i can sometimes be a perfectionist.Comment
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