ARMY TM 9-2815-260-24 AIR FORCE TO 38G1-126-2 MARINE CORPS TM 09244A/09245A-24 4-5 TABLE 4-1.  DIRECT SUPPORT TROUBLESHOOTING (Sheet 4 of 12) Not OK   Not OK   Not OK OK     OK   Not OK OK   OK   Not OK   ENGINE MISFIRES OR RUNS ERRATICALLY OR STALLS FREQUENTLY Engine misfires or runs erratically of stalls frequently. Inspect for dirty, defective, or leaking fuel injection nozzles (refer to paragraph 3.12.6). Test, repair, or replace fuel injection nozzles (refer to paragraph 4.6.2). Test for defective fuel injection pump (refer to paragraph 5.3.1). Test fuel injection pump timing (refer to paragraph 5.3.1). Time fuel injection pump (refer to paragraph 5.3.1). Perform end item troubleshooting procedures (refer to TM 9-6115-672-14 or other applicable TM). Repair or replace fuel injection pump (refer to paragraph 5.3.1). Test for low engine compression (refer to paragraph 3.7.1). OK   Not OK   Check valve adjustment (refer to paragraph 4.7.2). Notify next higher level of maintenance. Check for weak valve springs (refer to paragraph 4.7.3). Adjust valves (refer to paragraph 4.7.2). OK   Replace valve springs (refer to paragraph 4.7.4). Check for stuck or burnt valves (refer to paragraph 4.7.4). Replace valves (refer to paragraph 4.7.4). Not OK   OK   Notify next higher level of maintenance.