What was found
FACTORY NEW CYLINDER REMOVED FROM THE NR 3 POSITION DUE TO LOW COMPRESSION. UPON DISASSEMLBY, NOTED THE INTAKE VALVE SEAT WAS NOT SEATED PROPERLY IN THE CYLINDER HEAD. SUSPECT CAUSE: DURING ASSEMBLY AT FACTORY, SEAT WAS NOT INSTALLED INTO THE MACHINED PORTION OF THE CYLINDER HEAD PROPERLY. SUBMITTER SUGGESTED A CLOSE INSPECTION OF THE INTAKE AND EXHAUST VALVE SEAT BE PERFORMED DURING CYLINDER ASSEMBLY. CYLINDER MFG DATE: 12-97.