What was found
PILOT SAYS HE WAS CLIMBING THROUGH 17000` WHEN THE RT ENG LOST POWER AND WAS RUNNING ROUGH. THE PILOT DESCENDED AND LANDED WITH THE LT ENG. REMOVED COWLING AND CHECKED COMPRESSION AND FOUND NR 2 CYLINDER NO COMPRESSION. REMOVED NR 2 CYLINDER RBC AND FOUND INTAKE VALVE STEM BROKEN AT THE KEEPER AREA. FOUND THAT THE INT VALVE HAD HIT THE TOP OF THE PISTON BUT WAS STUCK IN THE GUIDE. REMOVED CYLINDER ASSEMBLY AND SENT FOR INSPECTION. THIS CYLINDER WAS REPLACED WITH NEW CYLINDER 28.3 HOURS PREVIOUSLY AND THAT CYLINDER WAS REPLACED BECAUSE THE INT VALVE STEM HAD BROKEN.