Hello, I have a newly assembled Wren 54 MK3 auto start that refuses to run. It starts up on power Max or propane, goes up to about 20,000 rpm, then shuts down. Other times it goes up past 30,000 rpm, starts to ramp up then shuts down. When it does this, I get funny RPM readings, sometimes 16,000 rpm then 30,000 rpm and within one second, it goes up to 160,000 rpm then it shuts down. I know that it is not running hot because it is no where near the 800 degree cut off.

When this happens the date terminal indicates either rpm low or flame out.

My friends tried to talk me into buying a P60 or a super Bee, but I told them that I think that the Wren 54 was a superior engine and now I'm eating crow. PLEASE HELP! Your input and feedback is appreciated. Thank you.

MARK.