TM 9-2815-225-34&P Table 2-1.  Mechanical Troubleshooting (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 2. Test for dirty or damaged injectors. Replace injectors (paras. 3-23 and 3-82). Step 3. Test for defective fuel solenoid valve. Replace fuel solenoid valve (para. 3-57). Step 4. Test for faulty fuel pump (disconnect fuel outlet hose; crank engine to see if fuel comes out). Replace fuel pump (paras. 3-16 and 3-78). Step 5 Test for incorrect adjustment. Adjust injectors (para. 3-85). Step 6. Test for incorrect valve clearance. Adjust valve(s) (para. 3-85). Step 7. Test for incorrect injector timing. Adjust injector system timing (para. 3-72). 3. ENGINE STARTING MOTOR OPERATES BUT DOES NOT ENGAGE THE RING GEAR Step 1. Inspect for defective starter pinion gear. Replace starter pinion gear (TM 9-2320-283-34). Step 2. Inspect for defective ring gear. Replace ring gear (paras. 3-25 and 3-80). 4. ENGINE STOPS Step 1. Check if engine is overheated. See malfunction 6. Step 2. Check for loose fuel solenoid wire and defective fuel solenoid valve. Replace fuel solenoid valve (para. 3-57). Step 3. Check for faulty fuel pump. Replace fuel pump (paras. 3-16 and 3-78). 5. ENGINE FAILS TO STOP Step 1. Check for stuck fuel solenoid valve. Replace solenoid valve (para. 3-57). Step 2. Check for turbocharger oil seal leak in compressor end. Replace compressor oil seal (para. 3-47). 6. ENGINE OVERHEATS Check for leaking or noisy water pump. Repair water pump (para. 3-64). 7. EXCESSIVE EXHAUST SMOKE Step 1. Check for incorrect injector adjustment. Adjust injectors (para. 3-85). Step 2. Check for defective fuel injector(s). Replace defective fuel injector(s) (paras. 3-23 and 3-82). Step 3. Check for blocked fuel return line in fuel system. Repair fuel return line (TM 9-2320-283-20). 2-4