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Sounds just fine.
 

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Lol @ PB, 2010 called...

Anyway, that is the noise the HPFP - High Pressure Fuel Pump makes. It's driven by a square(!) cam on the rear camshaft. It pumps up the fuel to the pressures required by the Direct Injection (DI) injectors. Basically it's the fuel system off a diesel, with the same noises. It just injects, well, gas instead of diesel.
 
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