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GL1000 Idles up

720 Views 8 Replies 5 Participants Last post by  PaulnPen, 
PaulnPen
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All,

I am having an idle issue with my GL1000. She seems to idle fine when cool, but once she gets hot, she will "idle up" at stop lights, etc. (2500-3000 rpm). If I let the clutch out a little, it will idle down and then return to an "idle up" status. If I pull on the throttle linkage, that seems to bring it down some, however if I push down on the linkage between the #3 and #1 carb (adjusting screw) it will idle down and hold. I think that I may have some dirty linkage between the two carbs, but before I start tearing it apart, I would like to ge the thoughts and advice from some of you who may have already been there or have some knowledge on the GL1000 carbs and habits.



Last year, I pulled the carbs and cleaned them, also rebuilt the vacum on the top of the carbs. ter, new battery, new timing belts, fluids and filters. I do not have any other major issues with the bike, she starts easily, and pulls hard.



Thanks
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jlparker77
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Have you ruled out the throttle cables? (I think it has two?) when you open the throttle and just let go of it does it "snap" back closed? there are other things to, but always start with the simplest. I have seen rust on the bar under the throttle tube do that. check for vacuum leaks? You will get it figured out.

jade
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DaveO430
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The link between the carbs could be improperly assembled or just way out of adjustment (synch). As well as Jade's reply, cables binding or too tight.
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jlparker77
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I don't have enough experience yet with these bikes but with snowmobiles, out of sync carbs will cause a temporary high idle after letting off the throttle which can last for maybe up to 30 seconds. Definitely sync them like Dave said if you get a chance.


Jade
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drknobs
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I had the same problem with my '78, bugged the crap outta me...synced the carbs and problem was gone.
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PaulnPen
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The throttle does return, I wouldn't say it "snaps" back. There is always just alittle that I have to "roll off". Not a lot, just a little. I will pull the cables and lube them. Then continue to troubleshoot the entire system.



Can anyone explain how the vacum system works on these bikes?
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redrum
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Hello,I think its time to sync those carbs.
Flatfour
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PaulnPen
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I think I got it fixed.

I adjusted the pilot screws to 2 turns out per the Honda Shop manual. Also found that the clamps on the intake boots were loose. Tightened them all up, adjusted the idle. Been running it that way for 3 days, no more "idle up" problems. Fuel mileage has also improved slighty. Now just need to fine tune.



Thanks
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PaulnPen
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The bike seems to be running o.k.with the current settings. Does anyone know where I should start to fine tune my settings?
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