Hello everyone....

I know this is a conversion engine forum, but zenoah´s are almost there, and people in this forum have shown me in the past very useful tips.

I have a Magneto Zenoah G26 mounted inverted on a GP SuperStearman.

It works great until I do a roll, and when the plane is inverted (engine with the piston up) the engine simply dies.

Could anyone help me on what should I do to fix this.

The engine runs and Idles great its just when the plane goes inverted even for a second when the engine dies.

Thanks a lot.

Victor Arreola.

It has been answered before, but check your tank plumbing. Hold your plane inverted, and see if a bubble free flow of fuel can make it to the engine.

Seems iunlikely that just a second of inverted flight would cause the engine to die of fuel starvation. Will the engine run inverted on the ground? Perhaps the problem is in the kill circuit where a wire is shorting out the magneto only when the plane is inverted? Good luck.

Spaceworm and PE Reivers, thank you very much.

Tank plumbing Im sure its not,,,,I have thoroughly check it

It sounds very much possible the kill circuit issue, it does exactly like if that happens,,,,,Ill be isolating this today and trying again this sunday.

Thank you very much to both of you.

Regards.
VÃ*ctor.

I am very tempted to follow spaceworm's opinion  in this one.

Me too...

AV8TOR

Problem solved.

Cover the wire from the kill switch and the engine runs great know.

Thank you very much.

VÃ*ctor.