TM 10-3930-669-34 6.  ENGINE RUNS ROUGH OR MISFIRES (CONT). KNOWN INFO Injection pump OK. Injection pump timing OK. Engine compression OK. POSSIBLE PROBLEMS Cylinder head(s) or gasket(s) faulty. Camshaft faulty, TEST OPTIONS Visual inspection. REASON FOR QUESTION If cylinder head(s) or gasket(s) is faulty, engine will not run. Replace cylinder head(s) or gasket(s) (Para 3-5).  Go to Step 6 of this Fault. 2-58