Which risk increases when an internal combustion engine runs with inadequately balanced crankshaft?

💡 Explanation

When an unbalanced crankshaft rotates, increased vibration occurs due to uneven mass distribution, generating cyclic loading on the main bearings, thereby accelerating wear. Therefore excessive bearing wear is the increased risk, rather than pre-ignition, injector clogging, or reduced valve float, which stem from different engine problems.

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