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Old 01-08-2019, 04:05 PM
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Qsilver7 Qsilver7 is offline
Join Date: Oct 2012
Location: Indiana, USA
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On my Bimmers with the M62/M62TU engines...the evaporative purge valve made a noise like you mention...and it would do it at idle. That's because at when the recovered fuel vapors (from the fuel tank) were being "recycled" to be burnt inside the engine.

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