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Carb Slide Springs

  • Thread starter Thread starter REDDY
  • Start date Start date
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REDDY

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I don't think I have read anything on the subject of carb slide springs so I've got to ask. Do all springs have the same resistance? What size spring goes with which engine? I'm still having problems with the carbs on my 1980 GS 550 with BS32's

As previously posted; I have three complete racks of carbs with three extras. When I got them none of the sets had all the correct parts so when I cleaned them ( Berrymans dip ) I got one set of correct parts out of 15 carbs. The only I way I had to determine what springs went with my carbs was to look at the clymers manual. it shows the smaller of my springs.

I assembled one set of carbs with jets that the book says are correct. It ran lean (pipe color) except that above 5k it would go rich.(plug chop) the only thing I can think of is the springs being too weak. If anyone knows what the hell is going on here I would be eternally grateful to them for some help.
 
Were all the carbs from the same CC bike (550)? Your color read on the pipes may be helpful, but how did it ride. Was there any hesitation in the midrange? Is the airbox/filter back in and sealed up tightly? Were all the jet needle positions set the same? As far as the springs are concerned, I'd go with the set that came with your original carbs. Lean in the midrange can be caused by several factors, that need to be ruled out, one at a time. Does it idle correctly? Once you get to the WOT or near that position, the mains (if sized correctly) will overcompensate for slight factors that will plague the midrange operation. Also, have you synche the carbs yet? This too will cause symptoms like you are describing.
 
None of these carbs are origional to the bike. Airbox sealed. It would accelerate to 6k fairly well then fall on its face. Did plug chop as it was bogging and the plugs were wet. carbs synched.
 
Find out where your throttle position is at when it falls on its face. This will help determine at which circuit you're having trouble.
 
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