Symptom Tree t051
| Cause | Correction |
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Refer to Engine Noise Diagnostic Procedures – General Information at the end of this section before using this symptom tree.
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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 in Section V in the Operation and Maintenance Manual, ISX11.9 CM2250, Bulletin 2883444. |
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Injector(s) are malfunctioning |
Perform diagnostics to find the damaged injector(s). Replace the injector(s) as necessary. Refer to |
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Piston pin or bushing is loose, worn, or not installed correctly |
Remove the pistons and inspect the piston pin and bushing for damage, wear, and correct installation. Refer to |
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Cylinder liner, pistons, or piston rings are worn or damaged |
Check the pistons, piston rings, and cylinder liners. Refer to Procedure 001-043, |
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