Why would a wb3a not pump fuel ?
I have a similar issue with my kt100 with a Wb3A on 110 with a mix of 8oz burris hirev, kinda of a pita at times to get it started, when it does, it runs extremely rich (gauging by the exhaust smoke), ive tinkered with the fulcrum arm height a little, cant seem to find a happy medium, though I guess I would rather it be on the rich side than too lean and ending up seizing it....I run in the Midwest on dirt and this summer, the humidity has been atrocious, not a master tuner by any means, but I suspect that is part of equation that maybe isn't being taken into consideration enough.....Instead of starting a new thread I thought I would pose this question here. I have experienced and witnessed just the opposite problem. Why would this carb on a kt100 pump too much fuel? I have had this problem recently and I have witnessed other racers this season have a situation where the motor will not start without completely closing the needles because it is flooded, or they have to run much leaner settings just to get it to run. It appears as if the needle isn't closing and there is enough syphon/pressure effect from the fuel tank that it is completely filling the carb with gas. When you go to start its already flooded. I can't speak for others but I usual run around 10-12 psi for pop off which should be enough to close the needle, no? Any thoughts?