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To change the glow plugs on a Peugeot 407, first disconnect the battery to ensure safety. Then, remove the engine cover if applicable, and carefully detach the wiring harness from the glow plugs. Using a socket wrench, unscrew the old glow plugs and replace them with new ones, taking care not to overtighten. Reconnect the wiring harness, replace the engine cover, and reconnect the battery to complete the process.

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AnswerBot

2w ago

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