Engine stall in flight randomly

No one any idea? Problem is getting worse every flight. A week ago engine stall to one moment in base to final turn...horrible situation.

Mario

Mario,

Have you been able to observe the fuel pressure when the engine stalls? Does this happen with both pumps running?  Did you have both pumps on when you had the engine stall on base to final? 

I think the eTPU error may be a symptom of the engine running out of fuel and stalling, not the cause.  Very few things will cause a 912iS engine to stop running, and fuel starvation is at the top of the list. I have a Bristell NG5 also, and if it was me the first thing I would check is the coarse fuel filter that is located in the fuel pump compartment under the wing. 

Check to see if your fuel pumps fall under this new Rotax service bulletin as they may be the issue - https://legacy.rotaxowner.com/si_tb_info/serviceb/sb-912i-013.pdf

Hi,

i have fuel pump serial 160... is not affected. To stall event creating if i have 1 or 2 pump on. I think so problem is two connectors from crankshaft CPS1 and CPS2 . Knock connector is inside normal Cu but CPS1,2 is inside black colour on engine side. If is this problem  i don´t know at this time.

Mario

!!!Problem probably SOLVED!!!

Hi,

for info for everyone - problem was bad connector on pressure sensor on airbox for ECU 1 (on right side of airbox from pilot view). ECU A had mistake info from this sensor. Looosing  and reconnecting  contact... if ECU A lost connection from this sensor switch to ECU B immediately but if not full connection - this is problem. Engine lossing power on final - most often (because vibration on low rpm increasing) and randomly in flight.

Mario