Thanks all.

If you are bored, you can check a video I recorded last Friday. Turn up the speakers a bit high to hear the engine.

http://www.youtube.com/watch?v=JL3d80uSj3g

The outside temp was 1 dregrees Celsius. With the alu-tape on the top, it didn't go down in RPM when the glow driver was remowed (A3 plug).

I've tried OS8, A3 and F plugs. Fuel without nitro and 12 - 25 % synth oil. The first time I tried Cool Power 7 % nitro it ran great. The next time and until now, it's back with rich midrange. Also 10 % nitro with 12 % synth oil.

3 different tanks. APC 9/8, 10/7, 11/5 and 12,25/3,75 props.

Last night I cleaned the carb ones again, and sealed the 2 O-rings towards the spraybar with Loctite 5699. The 2 O-rings on the needles are cowered in castor oil to eliminate air leaks (I can't by a new O-ring set here in Denmark any more).

No change with or without the head shim.

It's not a adjustment issue.

A gentleman in Denmark suggested testing the engine without tank pressure...


I just wondered, that Dabigboy´s engine also runs like s***. His engine didn't (like my engine) run for a long time...


Thanks