EXCESSIVE WHITE SMOKE AT IDLE.

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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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EXCESSIVE SMOKE WHILE ACCELERATING.

TM 9-2815-226-34-1

Table 2-1. TROUBLESHOOTING PROCEDURES (Cont)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

EXCESSIVE WHITE SMOKE AT IDLE.

Step 1. Check for stuck open thermostat.

Replace thermostat (TM 9-2320-281-20).

Step 2. Check for incorrect valve and injector timing.

Time valves and injectors (para 3-94).

Step 3. Check for cracked injector body or cup.

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

Step 4. Check injectors for proper flow adjustments.

Test and adjust injectors (para 3-75).

EXCESSIVE SMOKE UNDER LOAD.

Step 1. Check for defective baffles in muffler or severely distorted exhaust

piping creating high back pressure.

Replace muffler or defective piping (TM 9-2320-281-20).

Step 2. Check for dirt y turbocharger compressor.

Clean compressor (para 3-86).

Step 3. Check for blown or leaking head gasket(s).

Retorque head bolts (table 3-3).

Replace defective gasket(s) (para 3-6 and 3-94).

Step 4. Check for plugged injector spray holes.

Clean injector (para 3-73).

Step 5. Check for cracked injector body or cup.

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