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If a MerCruiser engine turns over and puffs exhaust but doesn't start, it could indicate a fuel delivery issue, such as a clogged fuel filter or a malfunctioning fuel pump. Additionally, spark plug problems or ignition system failures could prevent proper combustion. It's also important to check for any potential air intake blockages or electrical issues that might hinder the starting process. A thorough diagnostic of these components can help identify the root cause.

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2w ago

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