The last four/five flights my PST engine has started to flame out in different situations of the flight.
The first sign was that I got flameout when I was throttling down from full power to middle power during landing.
Today I had to cancel my flying due to three flameouts on all three flights. Today it flameout on full power when I making a loop.
Then it flame out on ground when I was throttling down after full power for 10 sec just to test engine reliability.

Can it have something to do with the ramp settings? When I throttle from full or mid to idle it has a gargling sound just before reaching idle.
The idle speed also pending from 55000 to 58000.
It seems that the engine dont catch to spool down from full/mid power to idle without flameout.

My engine is three year old and has 19,5 hrs and 161 starts.

I have checked the following:

Fuel lines
Fuel filter
Air bubbles

Please help so I can get out to fly again and make landings with a turbine that runs.[&o]