Symptom Tree
Turbocharger wheel clearance is out of specification |
Check the radial bearing clearance and axial clearance. Inspect the turbocharger. Repair or replace the turbocharger if necessary. |
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Air intake or exhaust leaks |
Check for loose or damaged piping connections and missing pipe plugs. Check the turbocharger and exhaust manifold mounting. Refer to Procedure 010-024 (Air Leaks, Air Intake and Exhaust Systems) in Section 5. |
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Fuel grade is not correct for the application or the fuel quality is poor |
Operate the engine from a tank of high-quality fuel. Refer to Procedure 018-002 (Fuel Recommendations and Specifications) in Section V. |
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Fuel drain line restriction |
Check the fuel drain lines for restriction. Refer to the OEM service manual. |
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Contact a Cummins Authorized Repair Facility |