All,

I have been catching fits with a recent installation of any engine I try on my 40 size ME 109. After a recent nose over and subsequent engine mount replacement, I have been unable to get any engine that I try to maintain high end operation.

After several hours discussing this problem with many of the club members in my home club and also with folks at local hobby shops, I have been given the following items of potential concern:

Vibrations creating bubbles in the fuel system and engine essentially not getting fuel from tank.

Replace foam, tank fittings and all fuel hose.

Vibrations coming from some other location within the aircraft might consider epoxy and support ribs in strategic locations.

Check tank height relative to spray bar for inverse mount engine installation.

If there are any other persons who have had this experience (where no matter how much I open the needle valve on the high end engine will die due to loss of fuel flow to carb)

Please Help.