As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENGINE EXPERIENCED POWER LOSS. MANIFOLD PRESSURE WENT FROM 32 - 20 INCHES. FLIGHT CREW MADE UNSCHEDULED LANDING WITHOUT INCIDENT. ENGINEER FOUND THAT SERVO FUEL INJECTOR WAS THE PROBLEM AND HAD FLOODED OUT THE ENGINE. ENGINEER REPLACED SERVO FUEL INJECTOR WITH SERVICEABLE UNIT. RAN UP A/C ALL CHECKED OUT AND A/C RETURNED WITHOUT FURTHER PROBLEMS. A/C HAS BEEN FLYING SERVICEABLE SINCE THEN.