As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT WROTE UP SMOKE AND FUMES IN COCKPIT. UPON TROUBLESHOOTING MAINTENANCE FOUND THAT THE START ELECTRO VALVE HAD FAILED CAUSING FUEL VAPOR AND MIST TO BE FORCED THROUGH THE P2 AIR LINE USED FOR CABIN HEAT. REPLACED START ELECTRO VALVE. OPS CHECK GOOD.