os .37 stalled..why? Did my 1st auto!!!!!

[929freak]

I have a hawk pro with a os 37...it has around 20-25 flights on the motor and everything was going fine until Saturday,I went up and was hovering around for about 3-4 minutes when the motor just died.It didn't sputter or hiccup or anything it just stalled,well I did my first auto and got away with out any damage(whew!). I know the motor is not lean,maybe even a little on the fat side,but when I pulled the plug the coil had a whitish almost shiny appearance and it seemed a little distorted,yes it looked like a plug out of a over lean motor,but I know its not lean!!! also I put the plug back in(no spares w/ me) and the motor fired right up,didn't fly just started it to run the fuel out of the lines. so what do ya think?

[JimLerch]

Muffler leak causing low tank / fuel pressure?

[TheBum]

How long had you been flying that glow plug? Maybe it was just at the end of its service life.

[929freak]

took off header tank and put in a new plug.......flies for a minute or two then just shuts off.
when I try to rerstart I have to give it a litle throttle trim and crank longer than normal(usually fires up immediatly)

[929freak]

o.k. I can't explain this but I figured out why it kept "stalling".My govenor was for some reason telling my throttle servo to go to the closed posotion for a nansecond then back to the previous position....I went ahead and reprogrammed my gov and haven't had an issue all day.as for that plug I mentioned that looked lean,there was a pin hole in a fuel line,caused the lean condition but wasn't the cause of the stalling. thanks for all the help and suggestions...

[viper0173]

im having the same problem with my os 50 what gov are you using? ive got the align