ORIGINAL: Jeff_edge540
CR - How do you determine if the pump is not pumping enough? I don't notice it leaning out in low/mid/or high rpm. I can hover just past half throttle and it runs great.
You are probably right - I don't prime enough (I'm afraid of flooding the plug again). I'll try it again with more priming and see how it goes.
If you can make the engine 4-cycle ('way rich) on the high end, by opening the high-speed needle, then the pump volume is OK. I just thought that since it doesn't run right until it warms up, there might not be enough pump volume for colder operation. Reread the instructions and you'll see what I mean.
CR