Originally posted by bentleywarren: You definitely do not want to hear an air 'hiss' of any kind from any of the vacuum lines. I would fix this leak, and hope that's the only problem. A vacuum leak can certainly cause erratic, rough idling.
And a loss in power.
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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