I have been getting flameouts when I bring my Pizazz into a hover with my Saito .91. I noticed that when I hold the model's nose up at idle it slows down, and when I put the nose down the idle speeds up again. The 8oz tank is about 1.25" back from the firewall. The funny thing is it only happens on cold days, below 50 degrees. On warm days it's fine. I'm using a new OS F plug, 15% Red Max. The idle does not seem steady even on the ground.
Fortunately the Pizazz is strong enough in the nose area to take a drop from 20ft, but it's annoying to say the least.
I think I'm having two separate problems, the glow plug is cooling in the cold air, and my muffler pressure is too low at idle. I think a Perry 4-stroke fuel pump and maybe on-board glow for the cold days would help. Maybe I have an air leak at the header or carb?
-Tom Andersen
Greensboro NC