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Follow up: 2002 Boxster engine sound, hum or resonance

Engine

Vehicle Information: Year: 2002; Engine (type, size, modifications): stock; Total Mileage: 18,000;

You were exactly right about the VarioCam tensioners. The problem got the attention of the District Service Manager, who initially suspected the VarioCam solenoids. But, when they got inside the engine, they saw problems with the tensioners. The tensioners were replaced, the noise disappeared, and the car runs better than ever. Thank you for your advice, which came very promptly and was 110% accurate.

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