What was found
ENGINE WILL NOT SHUT DOWN IN IDLE CUT OFF. RPM JUMPS FROM 250 RPM TO 400 RPM. BELIEVE DIAPHRAM DOES NOT SEAT TO CUT OFF FUEL FLOW.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ENGINE WILL NOT SHUT DOWN IN IDLE CUT OFF. RPM JUMPS FROM 250 RPM TO 400 RPM. BELIEVE DIAPHRAM DOES NOT SEAT TO CUT OFF FUEL FLOW.