Join Date: Jun 2012
Location: Buffalo/Rochester area NY
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Secondary carbs on tripower
I am having a problem with the rear carb with excess fuel running into the bores. I originally thought it was a problem with the float, but that looks really good with no leaks. I submerged it for several minutes in water, about 20, when I released it, it came right back up to the surface, and no water was inside when I shook it.
Next I checked for pump discharge leakage. There was a small gasket between the venturi cluster and difuser, (synchromesh), but no gasket between that and the screw head. So I placed a gasket there.
That only leaves the needle and seat.
This had been a problem up until 3 years ago when I pulled the entire intake set-up off and ran the Carter AFB. 2 years ago I rebuilt the carbs and checked everything out with a fine tooth comb. So it has been sitting on the bench for the last couple years until a month ago when I decided it was time to reinstall it. When I put fuel to the carb it looked like a faucet running.
Even though the needle and seat and gaskets were new. Is this just from sitting and need a new needle and seat, or is there a bigger underlying problem that I am not picking up on? Thank you for any help.