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Any Idea's on this one ? From cold start, all is well as in full choke idle up and smooth. As we approach slightly less than mid temp choke off, she idles @ 1000 rpm..Now she gets at mid to slightly more than mid temp and next time we stop the bike she hits 2000 to 3000 rpms and throttle check does nothing. So I back the idle screw off and go again,,, same thing untill the idle screw is almost completely out of the bike. At that point the idle go from 2000 to 3000 rpm to 0... If I let it cool off I have to re-adjust the idle screw to 1000 rpm and all over again????



Kinda sounds like my 1st wife, but I dont want a divorce... (yet)

and before you ask,,,,,no I didnt choke her!! (thought about it)
 

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My '78 was like that until I sync'd the carbs...they were way outta wack.
 

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have you check the advance unit thats under your points plate ? just my guess.
 

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Thanks for dropping in, I have not done the carbs yet and the advanced timing gizmoseems to befree and responsive... Are you thinking it gets stuck in the expanded position?
 

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I would bet that drknobs is correct here. I had a similar problem with my 1100. The carb synch can solve many problems. My throttle adjustment screw was nearly all the way which kept it running but it idled high. After the synch the throttle is turned out almost 5 turns. It now idles purring like a kitten at 950 smooth as silk.

:clapper:
 

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1993 gl1500, 1976 gl1000
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Carb sync is usually the culpret with this problem. Sounds like at least one carb is way out.
 

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Ok,,, Well, they have not been messed with since or befor this occured.. Could it be something is amiss or just get the gauges and sync ? Also a bit confused..if only one carb or even two went psycotic, would it bring the others up like that? I mean its smooth running so all 4 are joining in !! It's annoying to say the least and heats the bike up very quick... but I feel badly for the poor soul in front of me...they tend to get a lil anxious :) nervous ... :)
 

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Tnmtnboy wrote:
Thanks for dropping in, I have not done the carbs yet and the advanced timing gizmoseems to befree and responsive... Are you thinking it gets stuck in the expanded position?
:waving:yes
 

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1993 gl1500, 1976 gl1000
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Tnmtnboy wrote:
Ok,,, Well, they have not been messed with since or befor this occured.. Could it be something is amiss or just get the gauges and sync ? Also a bit confused..if only one carb or even two went psycotic, would it bring the others up like that? I mean its smooth running so all 4 are joining in !! It's annoying to say the least and heats the bike up very quick... but I feel badly for the poor soul in front of me...they tend to get a lil anxious :) nervous ... :)
Go here and read Randakks explanation of slow return or erratic high idle.

http://www.randakks.com/TechTip30.htm
 

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Very good info Tom, I keep forgetting the randakk site.... It's in the fav list now! and Thanks to all for the info, I now have asence of direction for the repair... I will post what the problem was as soon as I getR done.........:cool:
 
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