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jakeolsen
Guest
my gs550es is revving when I go down to first gear with the clutch in. when I let it out it is fine. All other gears are normal. does this sound like a carb problem?
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Calvin Blackmore
Guest
gosh i think one of the guys had the same problem on this model
try doing a search
it is too bad that we cant tag posts for ready refrencing later alas.
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Danjal
Guest
Thats odd if its just one gear. Id imagine you're only checking while moving correct?
Im more inclined to believe that the gearing isnt suspect here so much as an airleak. Just check a few gears at an idle. Keep the clutch in and shift up to second on the centerstand. And 3rd. See if it still does it without throttle. Id assume youve never got this problem since you're shifting while moving still.
Im more inclined to believe that the gearing isnt suspect here so much as an airleak. Just check a few gears at an idle. Keep the clutch in and shift up to second on the centerstand. And 3rd. See if it still does it without throttle. Id assume youve never got this problem since you're shifting while moving still.
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spyug
Guest
I just recently went through much the same thing with my student's 400 As Ed mentions above and as he advised me, this was indeed the issue. The o-rings on the carb ( intake) boots tend to shrink and allow air leaks causing a leaner condition and revs to rise.
Definitely change out the 0-rings as soon as you can. Contact Robt. Barr at cycleorings for them or you might get them locally at the stealership or perhaps an industrial supply store.
As a temporary fix, you could smear a bit of silicon goop around the flanges where the boot meets the head.
Since you are going to need to pull the carbs to change the o-rings, you might as well get the full o-ring kit from Mr. B. and strip, dip and clean the carbs while you have them off ( unless you recently did them).
Easy enough of a fix but a bit fiddly getting the carbs off and sometimes getting the silly boot screws out. You'll likely need an impact wrench for that.
Good luck with it.
Cheers,
Spyug
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jakeolsen
Guest
Ok, I'll get on this while I have a few days of rain.
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Calvin Blackmore
Guest
Spyug is correct of course
the o rings simply lose all resilience over time and crack and essentially go flat and stop sealing.
this really isnt a suggestion it is an absolute must do and removes a painfully variable variable from furhter diagnosis.
carbs are a gd pita to remove its god awful
and do use a impact driver otherwise youll just frustrate yourself and strip screws.
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jakeolsen
Guest
I bought an impact driver for working on my '80 gs550, so I am all set there. I should get to tear into these tomorrow. It is a needed tear down anyways as the assembly that holds the choke has been messed up for a while, and I was just putting it off until I needed to take the carbs off for some other reason.
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