I've got a new G38 with a C&H electronic ignition that I ran for the first time this afternoon and I'm having a bit of trouble with it. It starts just fine but has very limited throttle response even after it has warmed up. It runs well at about 1/2 throttle but will not respond as I open the throttle and dies if I start to close the throttle. I've reset the low and high end needle valves per the manual but with little effect. I'm scratching my head but not getting anywhere.

Any help is greatly appreciated.

Are you sure you have the spark plug cap all the way on.It goes on hard,push down with the heel of you hand and turn counter clockwise.When the cap is on correctly the wire snap ring will be all the way past the hex of the spark plug.No matter what the manual says open both needle a small amount. There is no such thing as a correct factory needle setting.
BCCHI

bcchi,

The plug cap is on all the way and the snap ring is in place below the hex. I've opened both needles (L & H) to little effect. I also have to rechoke it every time that I restart it which seems odd.

Could it be that your ignition battery is not up to snuff? You might try a larger capacity one.

CR

I've got a new 2000mAh, 4.8v on it and it's fully charged.

I finally got an opportunity to pull the engine out of the plane to check the carb (not enough room to do it in place) and everything looks fine. Guess I'll mount it on the bench this weekend and see what happens.

Has it sat long? Possible air leak, are you certain the batt. is up to snuff?

It sat for about a year from C&H's conversion until I ran it so I was wondering if it possibly had some "varnish" in the porting. I pulled the carb last night and everything is in good shape, installed correctly and clear. The 2000mAh battery is brand new and I've cycled it several times with good capacity. It runs great at the top end so fuel draw doesn't seem to be problem but metering does since it won't run at low throttle settings or idle. If it was running rough or lean I'd be suspicious of the ignition's strength but it is very smooth when running.