Hi,
I have a Super Tigre G61 It has not run from last year . The engine was removed from the plane over the winter and refitted this year after some repairs to the plane.The engine appeared stiff to turn over . After fueling up ,priming and using the starter to start the engine the stiffness disapeared and now the piston apears to be too free!And the engine has yet to fire up.. It simply has no compression. it does not even pressurise the fuel tank. Between the bottom of the stroke and nearly reaching the top of the stroke the prop freewheels as if there is no contact between the piston and the liner. I.e. the piston ring is not contacting the liner wall.The glow plug is OK. The fuel if a little oily is OK.I have tried an exterior tank in case the tubes were blocked.The Needle valve assembly is clean.I feel positive that it is the ring glued up over the winter months, has anyone any idea how to free it off.
Many thanks
Richard.