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'80 GS250t- carb rebuild, now idles great, Boggs w/any throttle

  • Thread starter Thread starter MatBirch
  • Start date Start date
Yes, I think an ultrasonic cleaner, along with wire and compressed air would do it.
 
At this point I think you have one more option and that is to squirt PB Blaster or similar penetrating oil, into the passage. Let it soak an hour or so and use compressed air. I've had good luck with PB on such items and it will penetrate to the clog. Just keep the PB away from rubber parts. It eats rubber.

The sonic cleaner would have a good chance of working and having one would be a handy thing.
Good luck and hope you get it sorted out soon.
 
As you say, the capillary passages are drilled during the manufacturing process and consist of a number of intersecting straight sections. Necessary but redundant external entry points for the drill are then sealed by pressing brass balls into the body. I agree, it will be difficult to coax anything through those passages and I've not heard of anyone removing the ball plugs then successfully refitting them.

Do persist with the cleaning and make sure you can squirt cleaner spray through those passages before you rebuild but my experience has shown there is a point (at least for me) where it's just quicker and easier to look for a set from a running bike and go from there.

Good luck!
 
I agree with Wallowgreen there comes a time when a new set of carbs is warranted. But I am the type that would, once I got a working replacment, try to drill out that brass ball, finish cleaning them just to see if could be done. I would think that JB weld and a small machine screw would plug that hole back up nicely.
 
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