Leaky float valves
Posted: Wed Aug 05, 2015 12:18 pm
So after i last stripped the carbs on my race bike one or more of my float valves started leaking fuel into the cylinders quite badly when at rest. I replaced all 4 float valves and seats with brand new ones from david silver (copies, not genuine honda) and i thought it was ok but when i came down the in garage this morning i could smell petrol and sure enough when i tried to turn it over quickly with the kill switch off there was some hydraulic lock.
Unfortunately the fuel tap doesn't close all that well when in the off position and has a mod to remove the diphram and spring so the only way to shut it off properly is to disconnect a dry break connector in the fuel line, which means removing the seat each time.
I'll be stripping them down again this evening to see which is leaking and if theres any obvious reason but my question is, does anyone know any tips or tricks to help the float valves seal properly?
I know someone one suggested to me that i score a groove where it seats but i'm not too sure about that. I checked when i replaced the valves and seats and the float heights are all set correctly, though i had to adjust one.
Unfortunately the fuel tap doesn't close all that well when in the off position and has a mod to remove the diphram and spring so the only way to shut it off properly is to disconnect a dry break connector in the fuel line, which means removing the seat each time.
I'll be stripping them down again this evening to see which is leaking and if theres any obvious reason but my question is, does anyone know any tips or tricks to help the float valves seal properly?
I know someone one suggested to me that i score a groove where it seats but i'm not too sure about that. I checked when i replaced the valves and seats and the float heights are all set correctly, though i had to adjust one.