This 1997 2WD S-10 truck has an Izusu 2.2 L 4 cyl. with auto trans. It was a delivery truck for a parts supply co. It broke a timing chain while in service and the timing chain was replaced. It was missing on no. 3 cylinder. A compression check showed low compression on no. 3 cyl. Thinking the broken T. chain may have caused damage to a valve, they removed the cyl head and had a valve job done. Still 'missing' on no. 3. Now, if I am correct, a good valve job would include a new cyl. head gasket and R & R of all valves, then the ONLY remaining causes of a low compression on no. 3 cyl. would be a worn or bad set of rings on that cylinder. What else could cause a miss on no. 3? I am now including fuel problems and igniton problems as well as no compression. What are the common problems with the '97 Izusu 2.2L engine? Is this engine known to be a good engine or a problem one?