During cylinder head inspection, a technician discovers hairline cracks between valve seats. What is the most appropriate course of action?

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Multiple choice — select the best answer

AInstall valve seat inserts to reinforce the area
BContinue using the head but monitor the cracks
CReplace the cylinder head
DWeld the cracks and machine the head

✓ Correct answer: C. Replace the cylinder head Hairline cracks between valve seats indicate structural damage to the cylinder head that will likely worsen under heat and pressure. Even small cracks can lead to coolant leaks, compression loss, or complete head failure, necessitating replacement.

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During cylinder head inspection, a technician discovers hairline cracks between valve seats. What is the most appropriate course of action?

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