I have a DA-50 in a Yak. It is a newer engine, prob. has about 4 gallons of fuel through it. Using Lawn Boy Ashless 32:1. I am swinging a Mejzlik 23 x 8 right now.

The engine was sent back to DA before installed on this plane since there were some updates that needed to be done. This was in Sept.

So here is the scenerio. This engine runs awesome. I spent hours in the set-up, mainly working on the transition. It is perfect. No gurgling, popping, 4-stroking, etc. It doesn't matter if the plane is inverted, knife edge, etc. I have had many ask me to set their DA up as their's don't run as good as mine. So I feel lucky, and am truly happy.

The problem is........I can not get this engine to come down to a low idle instantly. It takes several seconds for it to idle down. I can have the engine idling at a low RPM on the ground. Run the engine up. Come back to idle and it will be a higher idle than where I initally started. It will stay at that idle for literally 8 - 10 seconds. Then it will come down to the low idle.

I have gotten use to this and have flown the plane more than 20 flights. But it really sucks coming in on landings especially and having to judge it like my turbines. I usually circle the field to allow it to idle down before entering my approach.

Any thoughts or other experiences with this problem?

Ryan