What was found
EXHAUST PIPE HAD LARGE HOLE IN PIPE INSIDE HEAT MUFFLER. THIS ALLOWED RAW EXHAUST GAS TO ENTER ENGINE THROUGH FUEL SERVO. P/N RSA-5AD1.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EXHAUST PIPE HAD LARGE HOLE IN PIPE INSIDE HEAT MUFFLER. THIS ALLOWED RAW EXHAUST GAS TO ENTER ENGINE THROUGH FUEL SERVO. P/N RSA-5AD1.