TM 9-2320-361-10 Table 3-1. Troubleshooting (Contd) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 4. ENGINE STARTS BUT MISFIRES, RUNS ROUGH, OR LACKS POWER. Step 1. Step 2. Step 3. Step 4. Check to see if engine stop control on instrument panel is pulled out. If pulled out, push in to reset. Check for restricted air cleaner. If restricted, clean air cleaner element. Refer to para. 3-13. Check fuel supply system for water and impurities. Drain fuel from filter into a container until fuel is clear. Refer to table 2-2 If fuel is not clear before approximately one pint (0.473 1) has drained, notify your supervisor. Check primary, secondary, and final fuel filter draincocks for looseness. If loose, tighten. Check draincocks for leaks. If leaking, notify your supervisor. 5. ENGINE OVERHEATS AS INDICATED BY ENGINE COOLANT TEMPERATURE GAGE. WARNING Extreme care should be taken when removing filler cap if temperature gage reads above 180°F. Contact by steam or hot coolant under pressure may result in injury to personnel. Step 1. Step 2. Step 3. Step 4. Step 5. Check outside of radiator core for obstructions. If clogged, remove debris. Refer to table 2-1. Check coolant level. If low, add coolant as required. Check for leakage from radiator hoses and hose connections. If loose, tighten. If still leaking, notify your supervisor. Check engine oil level. If low, add oil. Refer to LO 9-2320-209-12-1. Check radiator fan. If fan blade is not turning, check for loose or broken fan drive belt. If loose or broken, notify your supervisor. 6. LOW ENGINE OIL PRESSURE. Check engine oil level. If low, add oil. Refer to LO 9-2320-209-12-1. 3-7