T337c

[WebMaster]

Does the engine completely shutdown, or just slow up?
You do not state how much time you had in between the first failure, and the one yesterday. Had you flown the airplane much in that time frame?
Diagnosing and troubleshooting intermittent problems is most likely time and materials, there is no probable estimate.
It would be logical to suspect the JPI sensors, unless you have flow it a lot, more than 25 hours. Are you seeing higher egt's, cylinder head temps, just before failure? If so, that would indicate a leaning condition. However, if it just shuts down, it is a different problem. Some obstruction to the fuel line, completely blocking the fuel flow