Hi,

I recently bought an FZ 63. The engine has barely a gallon of Powermaster 20/20 through it. It ran fine out of the box and has completed basic break-in. I just adjusted the cams and made another couple of test flights and everything seemed ok. I have been flying in pretty low temps 15-20 degrees F. The last couple of days I have been trying to fly, but it doesn't seem the engine wants to start at all. Tried different high end and low end settings, including the default ones in the manual. The plug checks out ok. This evening I checked the regulator diaphragm it seems fine. I am totally frustrated. Any input would be much appreciated. The engine is mounted inverted in a Seduction Freestyle. Broke in on Zinger 13x6, right now trying to get it started with 13x4.

What do you mean by "it won't start"? If it is getting fuel, if the glow plug is good, it will start. Do you mean it doesn't even POP?
Is the tank pressurizing? Is fuel getting through the regulator to the carb?. If not, something is plugged up. Cold can aggravate these problems, especially if you have not been running the engine dry when finished flying and disconnecting it completely from the fuel tank.

It doesn't "pop". I have a feeling, I may have set the high speed needle too lean and perhaps not enough fuel got in the carb. From what I see in the forums people open the high speed needle at least 3 turns. I went with the instructions and did 2.5 at the most. I seem to remember that in the break - in period, I had it open more than 3. I will try that these days. I dont usually disconnect the engine from the tank, or run it dry after I finish flying. The engine pressurizes the tank ok. That I checked first.

Refer to the setup instructions at www.ysperformance.com

Good Luck!