Why would engine have a loud hissing noise from engine when being accelerated on 2002 Nissan Altima

Engines rpms are high. Seems to not want to go as fast as normal. Using excessive gas. Engine makes a very loud hissing noise when pressing gas pedal in or out of gear.

by in Birmingham, AL on May 12, 2013
1 answer 1 comment
ANSWER by on May 12, 2013
sounds like you may have a vacum leak
COMMENT by on May 14, 2013
It is. Well it was the air intake box. Cost $185 to fix. That's not bad

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