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Old 11-19-2012, 10:13 PM   #1
cejatag1
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Exclamation Chattering carb piston valve?

since the day i bought my bike, it has always ran a little rough. Most of the time it runs lean and i'll get the occasional lean pop, but the biggest issue has been that while coming to a stop the bike will sometime die out or sputter and drop to very low rpms (to wich i have to blip to keep the bike on). It will normally idle pretty well @ about 1100-1200 rpms. If I try to raise the idle i the rpms begin to hang at around 3k.

... So finally as i was riding home the bike just gave out like it ran out of gas so i decided it was finally time to clean the carbs out. I found nothing too dirty aside from a bit of rust powder... finally after cleaning them i re-installed them and decided to start my bike up without the airbox. Strangely, the piston valve on the carb closest to the throttle cable (#1? i believe ) was chattering and kept shaking as the bike was running. I took them off again, checked everything looked fine, any ideas of what may be going on?

my bike: 98' SRAD 600, Rs-3 slip on Yoshi pipe, stock air filter, not sure if it has been jetted but the jet sizes are 132 on the outers & 130 on the inner carbs.
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Old 11-20-2012, 01:32 AM   #2
dj_smurph
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Re: Chattering carb piston valve?

Time for ccmhunt ...
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Old 11-20-2012, 03:43 AM   #3
LynnM
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Re: Chattering carb piston valve?

Start by doing a carb sync
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Old 11-20-2012, 05:08 AM   #4
ccmhunt
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Re: Chattering carb piston valve?

And, if it's been like that long enough, you may have considerable wear on the slide. After a sync, swap slide with another cylinder. Or get with me, I have tons....
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Old 11-20-2012, 05:07 PM   #5
cejatag1
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Re: Chattering carb piston valve?

i may have to get one off you ccm. Ill pm you. I bench synced the carbs a but its still running really crappy, and rpms are hanging again.. there goes my only vehicle again
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Old 11-21-2012, 10:06 AM   #6
dj_smurph
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Re: Chattering carb piston valve?

Or send the whole carbs to ccmhunt and let him work his magic. He really is worth it
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Old 11-21-2012, 11:30 AM   #7
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Re: Chattering carb piston valve?

Why thank you sir
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Old 11-21-2012, 05:23 PM   #8
Armi
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Re: Chattering carb piston valve?

I'm suprised we have to keep saying this....It should be common knowledge now!!!
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