Symptom Tree
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Lubricating oil does not meet specifications for operating conditions |
Change the oil and filters. Refer to Section 5. Use the oil recommended in Section V. |
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Fuel grade is notcorrect for the application, or the fuel quality is poor |
Operate the engine from a tank of high-quality fuel. Refer to Section V. |
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Lubricating oil is contaminated with coolant or fuel |
Change the oil and filters. Refer to the Lubricating Oil Specifications and Recommendations in Section V. It is recommended to change the oil and filter(s). |
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Crankcase ventilation system is plugged |
Check and clean the crankcase breather and vent tube. Refer to Section 3. |
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Air intake system restriction is above specification |
Check the air intake system for restriction. Clean or replace the air filter and inlet piping as necessary. Refer to Section 4. |
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| Contact a Cummins Authorized Repair Facility |
