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Help! Idle racing after carb rebuild

Started by Carrumbah, September 01, 2008, 05:40:17 PM

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Carrumbah

Greetings all. I went through both carbs, thoroughly cleaned them and set the floats and bolted everything back together. On first starting the bike the revs instantly raced to 6-7K at whick point I shut the bike down, moving the choke had no effect. I fiddled with the idle adjustment, starting with two turns out and then trying one turn and three--- seemed to make no difference. I did not touch the air screws at all.

Stangely, what caused me to tear into the carbs in the first place was a similar condition, high revs that "hung". I discovered a broken choke cable, replaced that, and no difference so the carb rebuild. There was a little of the usual rust but all else looked OK. What could I be missing? What is a good baseleine for the idle screw?

5thAve

Carb slides are moving freely up and down? Throttle cable routed properly? (does engine speed change when turning handlebars left and right?) Dunno. Need more information, I guess.

Anyone else?
GS500EM currently undergoing major open-heart surgery.
Coming eventually: 541cc with 78mm Wiseco pistons; K&N Lunchbox; Vance & Hines; 40 pilot / 147.5 main jets; Progressive fork springs; 15W fork oil; Katana 750 shock

VFR750FM beautifully stock.
XV750 Virago 1981 - sold
XL185s 1984 - sold

trumpetguy

My guess was going to be throttle cable too tight or in a bind.  5th Ave beat me to it...
TrumpetGuy
1998 Suzuki GS500E
1982 Suzuki GS1100E
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"Every gun that is made, every warship launched, every rocket fired signifies, in the final sense, a theft from those who hunger and are not fed, those who are cold and not clothed." -- Dwight D. Eisenhower

Carrumbah

I did fiddle with the throttle adjustment at the recommendation of a friend, just a slight amount of play now. I have a new choke cable (Motion Pro-- not OEM) and the spring does not quite seat properly, not allowing the choke to close all the way. However, moving the choke lever has no affect on idle, though I can visually confirm that the choke opens fully. As background I had to replace the cable since it had entirely seized after last year's storage.

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