Getrag Posted February 5, 2009 Share Posted February 5, 2009 Wonder if this is what is happening to me. It started off as a quiet whistle at all times and now, when I come on boost (stock TT), there is a sudden "sshhhhh" sound from the right side of engine bay, just infront of me (where the SARD BOV is). There are no other abnormalities, it drives fine (I have stopped driving it since this happened, however). If it is a leaky BOV, can they be fixed or better just replace? Thanks guys. Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted February 5, 2009 Share Posted February 5, 2009 I would be inclined to see if you can remove and block off the BOV aperture, and see if you still get the noise. Do you notice any performance drop off? Quote Link to comment Share on other sites More sharing options...
ADL Mark Posted February 5, 2009 Share Posted February 5, 2009 Could be a knackered dump valve. Have you got silicon hoses? Could be a split on one, as they're not always visible but will push open under boost and cause a sound. Quote Link to comment Share on other sites More sharing options...
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