i was going to change my carb intake "o" rings as my carbs are popping and idle is eratic but saw a article claiming that popping carbs may be a stuck valve, does anyone know any other symptoms of a stuck valve and how it can be unstuck without taking the head off?
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Unstick it by riding it; otherwise it's bent or busted or the springs are knacked etc and the head will have to come off. Chances are you've got a carb problem but what bike have you got?79 GS1000S
79 GS1000S (another one)
80 GSX750
80 GS550
80 CB650 cafe racer
75 PC50 - the one with OHV and pedals...
75 TS100 - being ridden (suicidally) by my father -
Stuck valves are extremely rare, however burned valves from idiot's not adjusting them is common.
First step toward eliminating running problems is basic maintenance. If the bike still doesn't run right you then will have a baseline from which to build.Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-ResurrectionComment
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The only external sign of a stuck valve would be excessive valve clearance
Do a valve adjustment and see
Popping is generally a lean mixture issue1978 GS 1000 (since new)
1979 GS 1000 (The Fridge, superbike replica project)
1978 GS 1000 (parts)
1981 GS 850 (anyone want a project?)
1981 GPZ 550 (backroad screamer)
1970 450 Mk IIID (THUMP!)
2007 DRz 400S
1999 ATK 490ES
1994 DR 350SESComment
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do a basic compression check to check for a sticky valve.Comment
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popping could also be just a airleak, bad sync, or just too rich.
is the popping from the exhaust or is it kinda a hissy spitty ness from the carbs?Comment
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Popping from the carbs, more like a phuting sound! it has K&N filters which ran fine last month, but i think the weight of the carbs may have caused an airleak in the intake O rings as the the revs stay up when the throttles used and the idle screw produces erratic resultsComment
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ya i got that on mine awhile back.
once it was from the fuel screw too far out the other was during syncing when the butterfly was too far closed, or with the floats to high. all due to a rich mix.
the only other thing i could think of is that due to running rich like with pods there was excess carbon on the valves causing them to stick or lag up and the hissy spitty noise was the cylinder pressure.
but the erratic idle has to be an air leakLast edited by Guest; 04-22-2011, 06:33 AM.Comment
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