TM 10-3930-669-34 6.  ENGINE RUNS ROUGH OR MISFIRES (CONT). KNOWN INFO Injection pump OK. Injection pump timing OK. Engine compression OK. Cylinder head(s) or gasket(s) OK. POSSIBLE PROBLEMS Camshaft faulty. KNOWN INFO Injection pump OK. Injection pump timing OK. Engine compression OK. Cylinder head(s) and gasket(s) OK. Camshaft OK. POSSIBLE PROBLEMS TEST OPTIONS Visual inspection. REASON FOR QUESTION If camshaft alignment is incorrect or faulty, engine will run rough or misfire TEST OPTIONS Verify repair. REASON FOR QUESTION If engine does not run rough or misfire, fault has been corrected. 2-60 Align or replace camshaft or replace engine (Para 3-16 or 3-3).  Go to Step 6 of this Fault.