TM9-2320-361-34 Table 2-1. Mechanical Troubleshooting (Contd). I MALFUNCTION TEST OR INSPECTION 4. ENGINE STARTS BUT STOPS WHEN ACCELERATOR IS OPERATED Step 1. Check fuel leakage at inlet side of fuel supply pump (mounted on fuel injection pump) (malfunction 18, step 4). Step 2. Check fuel delivery systems (malfunction 18). END OF TESTING! 5. ENGINE STOPS WHEN ACCELERATOR IS RETURNED TO IDLE POSITION Check fuel delivery systems (malfunction 18). END OF TESTING! 6. POOR ACCELERATION AND/OR LACK OF POWER Step 1. Step 2. Step 3. Step 4. Step 5. Step 6, Step 7. Check vehicle clutch system for slippage (malfunction 25). Perform fuel delivery malfunction 18, steps 1,2, and 3. Check fuel injection pump timing is set within engine specifications (para. 5-4). If fuel injection pump timing is incorrect, adjust (para. 5-4). Check turbocharger operation. Remove plug from top of inlet manifold. Install low pressure gage with adapter into plug opening. Start engine and accelerate engine to fill throttle and immediately decelerate. Observe pressure gage readings. If no gage movement or only a small pressure increase by gage is evident, replace defective turbocharger (para. 5-6). Check turbocharger outlet hose, intake manifold elbow, and gasket for leaks (para. 5-6). Tighten base screws and clamps. Replace any missing screws or clamps (TM 9-2320-361-20). If no improvement during test run, remove and inspect turbocharger hoses, intake manifold elbow, and gasket for defects (para. 5-6). Replace defective components (para. 5-6 and TM 9-2320-361-20). Check engine valve train operation and valve lash adjustment (malfunction 3, step 2). Check engine cylinder compression (malfunction 11, steps 1 and 2). END OF TESTING! 7. ENGINE DELIVERS EXCESSIVE BLACK EXHAUST SMOKE Complete troubleshooting malfunction 21. END OF TESTING! 8. ENGINE SURGES Step 1. Check fuel supply pump (mounted on fuel injection pump) operation (malfunction 18, step 4). Step 2. Check fuel injector nozzles operation (malfunction 18, step 2). Step 3. Check fuel shutoff system for correct operation and adjustment (malfunction 18, step 1). END OF TESTING! 2-8