As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENGINE HAD BEEN HARD TO START, LOW STATIC RPM AND HIGH MANIFOLD PRESSURE. ENGINE INSP. REVEALED THAT THE CAMSHAFT LOBE THAT DRIVES NR 5&6 CYL INTAKE VALVES WERE WORN. FURTHER TEAR DOWN OF ENGINE REVEALED NO FURTHER ABNORMAL WEAR OR CORROSION.