Carbs leaking

rayprime
Junior Member

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Carbs leaking Oct 3, 2021 16:46:09 GMT

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Post by rayprime on Oct 3, 2021 16:46:09 GMT

trying to rebuild my CB125tdC and have it running really, however i cannot stop petrol leaking out of the overflow pipes.

cleaned the seats etc many times, if you hold it closed with very light pressure it seals fine.

However I cant adjust float height as is a plastic float any ideas chaps. do i need new floats and if so where can they be purchased is it possible to adjust plastic floats warm them up maybe.

grahamb Silver Member Posts: 1,414 mini-profile background: {"image":"","color":"19e663"}	Carbs leaking Oct 3, 2021 17:40:00 GMT PM Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by grahamb on Oct 3, 2021 17:40:00 GMT I had a problem with a carb overflowing. After some investigation it turned out to be a hairline crack in the brass overflow pipe in the float bowel. May be worth a look . Cheers Graham

ian
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Carbs leaking Oct 3, 2021 20:45:06 GMT

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Post by ian on Oct 3, 2021 20:45:06 GMT

There's been a few cases of corroded overflow pipes on here, so definitely a possibility. Do you know the where the float valves came from? Another possibility is poor pattern valves. Silvers has the original, 16155-KFR-70, but expensive at £25 each! We had this problem on our CB125T, but only one carb, and only when the fuel tap was first turned on. Never got round to sorting it, just gave the carb a couple of taps with a spanner before turning the fuel on & it would be fine for the rest of the day - till next time

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Post by rayprime on Oct 3, 2021 16:46:09 GMT

Post by grahamb on Oct 3, 2021 17:40:00 GMT

Post by ian on Oct 3, 2021 20:45:06 GMT