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xs650 > > Motorcycle Systems > > Fuel > > just rebuilt carbs |
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bobfrazier Full Member
Joined: May 29, 2008 Posts: 25
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Posted: June 19, 2008, 3:02 pm Post subject: just rebuilt carbs |
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now the rpms are hanging they take a liitle to come back to idle is this the sync not correct or advance rod needing lubed
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Retiredgentleman 650Rider Supporter
Joined: Mar 03, 2007 Posts: 2258 Location: Calgary, Alberta 1978 XS650 SE
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Posted: June 19, 2008, 4:11 pm Post subject: Re: just rebuilt carbs |
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Probably the advance rod. Lube with moly grease.
_________________ Accel Coil, Pamco Ignition, Heiden Oil Filter/Cooler, VR-115 Regulator, Double Bridge Rectifier, 17/33 gearing, 55 mpg |
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5twins Full Member
Joined: Aug 05, 2006 Posts: 1616
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Posted: June 19, 2008, 4:47 pm Post subject: Re: just rebuilt carbs |
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Could be an air leak as well creating a lean condition. New manifolds are needed on most of these bikes. You'll pull your hair out trying to tune and sort the carbs if you have the old manifolds and they're all cracked and sucking air.
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bobfrazier Full Member
Joined: May 29, 2008 Posts: 25
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Posted: June 19, 2008, 8:25 pm Post subject: Re: just rebuilt carbs |
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ok i went over the gaskets with cleaner no change in idle so no leaks???? now the advance rod remove from points side and clean and lube with moly grease i found some brake grease containing moly will that work i am about ready to pull my hair out .
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weekendrider Support Staff
Joined: Apr 20, 2007 Posts: 1284 Location: SW MO 2x83SK 79F 78E
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Posted: June 19, 2008, 8:55 pm Post subject: Re: just rebuilt carbs |
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Is the throttle cable binding anywhere? When it's running high can you push the throttle linkage back to idle. Maybe the idle is set a tad to high and you not noticing it till the bike is good and warm?
_________________ geocached @ N 37° 26.917', W 093 11.724, elev. 1148' |
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bobfrazier Full Member
Joined: May 29, 2008 Posts: 25
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Posted: June 19, 2008, 9:03 pm Post subject: Re: just rebuilt carbs |
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i did noticed that i could back idle screw out completely and idle would stay the same and when i closed it with my hand i idled down but as soon as a let it go it got faster like the spring on the carb is to strong ??????? i cant find it catching anywhere
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weekendrider Support Staff
Joined: Apr 20, 2007 Posts: 1284 Location: SW MO 2x83SK 79F 78E
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Posted: June 19, 2008, 9:08 pm Post subject: Re: just rebuilt carbs |
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So maybe you don't have enough tension on the return spring? Take the cable off and work the throttle. It should snap back shut.
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