Vaccum Leak?
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Joined: Feb 2003
Posts: 13
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From: Indiana
Vaccum Leak?
Ok, I think I might have a vaccum leak somewhere...when I start my explorer, whether it is cold or hot outside, I get a slight hissing sound, with all the air conditioning etc. controls off. It's rather quiet when it is just idling in park but if I tap the gas, when it idling down it is alot louder. Now does this sound like a vaccum leak...I was also wondering if this could be a problem with a bad PCV Valve, which I have the new one at home but just haven't replaced yet because it's a pain to get to. Any suggestions? Like if it is more likely a vacuum leak, what is the easiest way to find it?
