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HELP needed - Vacuum leak ?
Hi,
when I replaced the air filter this weekend and started the engine with the engine cover off I noticed a LOUD hissing sound every time when I step on the throttle and also when I let off the throttle.
I did the usual tricks looking for a vacuum leak but couldn't find anything.
It seems to me that the noise is coming from the area which is circled red in the attached picture.
Any ideas / hints etc?
BTW: does anyone know the purpose of this big tube which is circled?
Thanks
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I still wave at Boxsters, but they no longer wave back :-(
2002 Boxster S "Violet" (sold but not forgotten)
2009 Carrera 4S "Kelsey" (current ride)
2015 FIAT 500e "Nikki" my commuter car
Last edited by ChrisZang; 04-22-2008 at 08:08 PM.
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