EXCESSIVE FUEL CONSUMPTION.

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ENGINE ACCELERATES SLOWLY.

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TM-9-2815-226-34-1 Engine Diesel 6 Cylinder Inline Turbocharged Cummins NTC-400 BC2 Manual

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POOR ENGINE DECELERATION.

TM 9-2815-226-34-1

Table 2-1. TROUBLESHOOTING PROCEDURES (Cont)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

13.

EXCESSIVE FUEL CONSUMPTION.

Step 1. Check air intake and exhaust for restrictions.

Remove restrictions (TM 9-2320-281-20).

Step 2. Check fo r external fuel leaks.

Repair as necessary.

Step 3. Check for improper injector flow adjustments.

Test and adjust injector (para 3-75).

Step 4. Check for cracked injector body or cup.

Replace defective injector (para 3-6 and 3-94).

Step 5. Check for damaged injector O-rings.

Replace O-rings (para 3-73).

Step 6. Check for incorrect valve and injector timing.

Time valves and injectors (para 3-94).

Step 7. Check for defective or miscalibrated fuel pump.

Test and calibrate pump (para 3-84).

Step 8. Check for excessive main bearing clearances.

Replace defective bearings and recondition crankshaft as necessary (para 3-6).

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