Dear Friends,

I am flying Gas planes since the last two years upto 170 cc. Recently i bought dle 55 engine and was performing excellent . I have done more than 80 flight and lots of hover and the engine gave me no trouble. Suddenly two weeks back while i was hovering ,the engine started losing power and I was lucky to get away with just a damaged landing Gear on my CAARF YAK 55 sp.

I then tried starting it on the ground the following was the trouble with engine.
- It works ok till half throttle as soon as i increase beyond half throttle the RPM starts reducing and the engine cuts off, as if not getting any fuel. My engine Has 2 filters one on the filler and one between carbourettor and tank.
Also i have two fuel filters on my fuel filling caddy.

I have tried the following as well:
1) I checked tank and fuel flow to carb - it was ok
2) changed plug and checked current -it was ok.
3) I tried to open needle - no improvement
4)I changed ignition battery pack- no improvement
5)I opened fuel filter in carbourettor no dust was found. I have a spare carbourettor of Wilbro i Changed it but problem still persists.
6)I have a spare ignition unit i tried that as well problem still persisits.

Now i am really in a fix. Please let me know and help me with what i need to do further.It will be a great help to me Engine just doesnt come to full rpm.
I might take time to reply as i am travelling to Uae for the Uae Top jet meet .I will reply as soon as i can.

Regards
Varun