Today I "freshened" the rear carb. Went through the fuel block. Basically everything (primary and secondary jets, mixing tube) that mixed gas with air was plugged so I soaked everything in cleaner, rinsed in water, blew out and reassembled.

Engine fired immediately, but would not idle and ran rough but with periods of occasional smoothness -I had to keep it running by pumping the gas pedal. Still, a step in the right direction. The engine sounded good, lots of oil pressure, no smoke, and no leaks. Not bad for a 1992 rebuild!

My plan now is to do a complete rebuild of the front carb including the base to be sure the idle circuit is OK. I will then try to run the engine and maybe proceed to rebuild the base of the rear carb as well.

I will say the change today after the "freshening" of the rear carb was like night and day. It makes me think that Christy's problems are probably carb-related.

Thanks for everyone's support on this.

Chuck

WOW! Glad to hear that YOU got YOUR 250C running!!
Strong work!! :)
Woo Hoo!!

Did you do any adjustments on it OR were you lucky enough to get it to run in it's current state ( along with your scrub down, of course)?

~Christy

No adjustments - just cleaning out the jets, mixing tubes and anything else that had a hole in it. Also let the top and fuel block soak for a while. The float and valve looked OK so I did not mess with them.

My motto is like the physicians - "First, do no harm."

I do have two extra carbs if you end up needing parts.

Good luck!

Chuck