i have a zenoah g26 mounted on an ultra stick.

the engine and airplane are fairly new, and i have been getting really crappy throttle responses from the g26. if i do it nice and slow, and smoothly, it goes from low to high rpm just fine. but when i give the throttle a quick push from idle to full, it has quite on me 3 times. im thinking that this has to do with either the low or high end mixture. i tinkered with it a little but really wasnt able to get any results. im a newbie to gasoline engines, and i know that this engine should be more reliable than it is being. any advice or tips to help get better throttle response or better perfomance out of the g26 would be greatly appreciated.

thanks.

danny

Its most likely lean, To check for lean just pinch the fuel line and see if the engine just slows down and stops (lean) or if it speeds up and then dies (rich)
Or you have the throttle butterfly backwards, with the throttle closed and looking from the choke side you should see the threads of the screw that holds the butterfly

dstueber1,

If you don't have the throttle butterfly backwards then it's just a matter of tweaking the high and low neddles. A rough setting would be about 2 turns open on both. Start with the low end and lean it out until you no longer have a good transition and then back it off 1/8". Now go to your high end and keep leaning it until you reach max rpm. You will need to use a tach for this. Once you reach max rpm back it off 1/8". Now go back and check the low end, you may have to go back and forth a few times.

Just richen the LOW needle about 1/8 turn. It's probably still breaking in, run a gallon thru it and re-adjust. These are very good engines.