older model Super Tiger .90 tuning....

[timjerome]

I have, recently, been touching up one of my uncle's old models (not sure what it is actually, low-wing .90 sized) which had an older Super Tiger .90 installed. I brought the plane outside, installed a new plug, fueled it, primed it, and it started on the very first flip. I am able to achieve a solid idle setting, although the transition from idle to around 3/4 throttle is very poor. It sputters and often dies. I am using a standard 10% fuel. There is also a fair bit of smoke (from muffler) during this transition. Could it be running too rich? and ideas? thanks

[AJCoholic]

Sounds rich on the lower end. try leaning it out in small increments and see how the transition is.

[JimMoss]

Make sure the Hegh speed needle is out at the most 2 full turns leave glow attached till midrange than remove glow and set top speed.

Bring engine back to idle let idle for about 10 seconds then pinch fuel line it no increase in RPM and engine dies the low end is to lean.

If more than a couple rpm increase then engine dies low end is to rich.

Hope this helps!

Jim Moss :)

[timjerome]

thanks for the replies....I'll let you know how it turns out