10-10-17, 04:38 AM
(09-10-17, 11:03 PM)redmandan link Wrote:Does a blocked needle valve seat cause overflowing carbs whilst the engine is running?
As for the rest with such blocked carbs I'm thinking maybe the tank is rusty on the inside, anybody heard of this being a problem? I think I'll fill a few glass bottles from the tap on the tank whilst it's off the bike and see if I can see any particles.
Yes, the needle valve being blocked will cause overflow problems.
If any of the particles are black this indicates that the fuel hose is degrading and needs changing. Easier and quicker to take a section of pipe to bike dealer (or car parts supplier if there are no bike dealers) to match the diameter of the pipe. It's not very expensive so buy more than you need. Also fit an in line filter and some proper hose clips instead of jubilee clips.
The tank can go rusty on the inside (it does on most bikes eventually) or get loads of crap in it. It takes a bit to clean them out but it's worth doing. If it is very rusty it might be easier (and cheaper) to find a replacement.