Series 60 DDEC VI Troubleshooting – Section 10.1 Improper Grade of Fuel

Section 10.1
Improper Grade of Fuel

To determine if an improper grade of fuel is causing excessive white smoke, perform the following: ‪

1. Acquire a fuel sample from the vehicle fuel tank(s).
2. Submit fuel oil sample for an ASTM test analysis.
   1. If the fuel meets specifications, check the fuel pump; refer to "10.2 Defective Fuel Pump" .
   2. If the fuel did not meet specifications, resolve improper grade of fuel; refer to "10.1.1 Improper Grade of Fuel Resolution" .

Section 10.1.1
Improper Grade of Fuel Resolution

Perform the following steps to resolve the improper grade of fuel oil:‪

1. Drain the fuel tank(s), refer to OEM guidelines, and dispose of properly.

   NOTICE:
   Use only Ultra-Low Sulfur Diesel (ULSD) fuel (15 ppm sulfur content maximum), based on ASTM D2622 test procedure.‪

2. Refill the fuel tanks with new fuel.
3. Verify fuel resolution; refer to "10.1.1.1 Test the Engine with New Fuel" .

Section 10.1.1.1
Test the Engine with New Fuel

Perform the following steps to determine if the new fuel refill resolved the excessive white smoke condition:‪

1. Start and run the engine.
2. Run the engine at idle with a no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range.
3. Visually inspect exhaust for excessive smoke.
   1. If the engine exhaust smoke emission appears normal, no further troubleshooting is required. Shut down the engine.
   2. If the engine exhaust smoke is excessively white, shut down the engine. Check the fuel pump; refer to "10.2 Defective Fuel Pump" .