2 wing pilot,

Excuse me, but are you doing the break-in per the instructions that came with the engine? Is your fuel delivery system as per the instructions? My instructions are of the Gerard Enterprises version from 1999. Are yours from Gerard Ent. or from Horizon Hobbies? What numbers are stamped on the right engine lug that would indicate what year it was manufactured? Have you re-started the break-in procedure from scratch? I mean from a closed HS needle valve to the number of turns that the instructions suggest and up to the suggested RPMs for the suggested duration of time and tank fulls. Sorry, I just gotta know more than what I have read so far. Which is really not much to make a fair diagnosis.

Anyway. Here's my setup. A JTEC aluminum motor mount; Bisson Pitts-style muffler with one exhaust stack; a Menz or APC 16X8 prop; medium Prather fuel tubing; the ends of all fuel lines are clamped on tight with pieces of fuel tubing; no fuel filter; OS 4-stroke plug; minimum 16 ounce tank set up with no errors; centerline of fuel tank is no more than 1/4th inch below the needle valve centerline; every screw/bolt on engine and motor mount has been checked for tightness; Power Master 5% fuel; and that's all I can think of right now. I may have left out something.

Could you give me a similar run down? I need more information when trying to help someone. I don't mean to be rude or any such thing.

When you have had the engine running, do you see any bubbles of air passing through the fuel line? What pattern occurs just before it dies? Do the RPMs increase just before dying? Does it come to a halt suddenly? Is there fuel leaking out of the carb or front end of prop washer area? BTW, have you considered your club's engine guru? Every club has one or more REAL gurus. What does he say?

Who did you buy the engine from? If from Horizon or a local hobby shop, then you might have some help there. If in a swap meet, .... h-m-m-m. Do you have the instruction sheet(s) to follow? I can email you a copy of mine in pdf format.

I will be looking for your response in the next few days.

San Antonio Flyer