As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A RECENT LOCAL FLIGHT, PILOT REPORTED SMOKE IN THE COCKPIT. FOUND A DISCONNECTION OF THE PILOT SIDE EXHAUST STACK ASSEMBLY WITH THE ENGINE MUFFLER. THIS SEPARATION OF THE EXHAUST SYSTEM ALLOWED HOT EXHAUST GAS TO BURN UP SOME OF THE ENGINE COMPARTMENT WIRING AT THE STARTER CONTACTOR AND ITS RELATED AREA.