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Hissing sound
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<blockquote data-quote="CAJ19" data-source="post: 54" data-attributes="member: 105"><p>When I hit hard on the gas pedal, a very high hissing sound comes from the engine bay. Tried to check for loose air hose connections but all were in order. Even took out the intake manifold, still could not trace the source of sound. It happens only when the rev reaches >2500rpm. Issit normal for a 525 single vanos to sound like that when you rev hard???? Sifus, please help</p></blockquote><p></p>
[QUOTE="CAJ19, post: 54, member: 105"] When I hit hard on the gas pedal, a very high hissing sound comes from the engine bay. Tried to check for loose air hose connections but all were in order. Even took out the intake manifold, still could not trace the source of sound. It happens only when the rev reaches >2500rpm. Issit normal for a 525 single vanos to sound like that when you rev hard???? Sifus, please help [/QUOTE]
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