Which risk increases when uneven connecting rod bearing wear alters crankshaft journal alignment?

💡 Explanation

When uneven connecting rod bearing wear misaligns the crankshaft journals, harmonic vibration occurs because the rotating mass becomes unbalanced, exciting resonant frequencies within the engine block. Therefore harmonic vibration results, rather than viscosity increase, NOx changes, or fuel injector malfunctions which stem from unrelated mechanical or chemical processes.

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