Originally Posted by George62

Thank you gunradd and mauryr for your analyse and advice.

We ruled out the bubble could be the cause because we deliberately tested the engine on the stand to see what happens when we send few bubbles down the pipe from the UAT and all we saw and heard was some puffing, but no fameouts. Therefore, we rather tended to blame either mulfunction of the ECU or some problem with electric supply as we experienced some fast flashing and then no light at all on ECU´s violet control LED prior starting the turbine 4 cycles back from the unexpected shutdown. The ECU battery we use is LiFe ZIPPY Flightmax 2100mAh 30C and its testing yesterday showed it is capable of max continuous burst of 10A and max limited burst of up to 20A
- Is that enough ?
- Does the ECU/FADEC records battery related problems and data and if so how we can get them ?
- What average amps or Watts takes 1)the pump, 2)starter motor and 3)ingnition/glowing process ?
- What tell us the numbers apprearing under "Aux" in FADEC ?

Based on the findings, your advice and other information we plan:
- to remove the filter from the line between the pump and turbine, seeing it as a potential source of bubbles and an obsolete part as the UAT filter should do the job
- to replace all tygon hoses and sharp turns by loops
- to replace the ECU battery if you advise to do so

Kind Regards,
George