If the engine is running WOT it has a nice solid sound - very clean, however, once in a while a little this sound is interrupted by the sound the engines do if they run a bit below the full throttle (don't know how to describe) and then it goes back to the nice sound. What can that be? Not enough fuel? Large tubing???

Hmmm. Maybee it's surging for fuel? But if I recall correctly on mine, I think it did it also. So I did do a few things but I dont know witch solved the problem. Larger fuel tubing, no filter on the main line, Larger brass tubing for the pick up. You may want to try to open or close your high needle a hair. But Are you still on your first gallon of fuel. Is your carb. getting enough air?

By the way I went flying a couple of weekends ago and Guess What, It started on the first flip after 3 months hybernating in the hanger for the winter. I'm gladd it's getting better but be patient. As far as the warm / hot start, try to keep the throt. idle on the normal or low side. I noticed if my idle is too high, I'ts harder to start.


Keep up the good work and patience.

Let me know how it goes.

Glad to help

Gunny