ARMY  TM  9-2805-262-14 AIR  FORCE  TO  38G2-90-1 NAVY NAVFAC P-8-613-14E Table 4-2. Unit Troubleshooting Procedures (cont). Malfunction Text or inspection Corrective  Action Step  10.  Check  carburetor  adjustments. Adjust carburetor as needed (para. 4-25). If engine still will not start, refer to DS maintenance. 2.  ENGINE  STARTS  BUT  FAILS  TO  KEEP  RUNNING. Step 1. Step 2. Step 3. Step 4. Step 5. Remove air cleaner element and start engine (para. 2-9). If engine stays running, service air cleaner (para. 4-1 4). Check fuel flow out of fuel filter assembly. If fuel flow is not present or steady, service fuel filter assembly (para. 4- 13). Check screen at fuel inlet of carburetor. Clean  as  needed. Check  carburetor  adjustments. Adjust carburetor as needed (para. 4-25). Check fuel pump pressure (para. 4-37). Replace fuel pump if pressure is inadequate (para. 4-37). If engine fails to keep running, refer to DS maintenance. 3. ENGINE MISSES OR RUNS ERRATICALLY. Step 1. Step 2. Step 3. Step 4. Check spark plugs. Clean, regap, or replace worn spark plugs (para. 4-28). Check spark plug cables. Replace a defective spark plug cable (para. 4-27). Check breaker point gap. Adjust or replace worn breaker points (para. 4-49). Check fuel flow out of fuel filter assembly. If fuel flow is not present or steady, service fuel filter assembly (para. 4- 13). 4-6 Change 1