What is this connection on my engine it is making a hissing sound

2003 FORD ESCORT
100,000 MILES • 2.2L • 4 CYL • AUTOMATIC
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LOGAN0708
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I need to know what this connection is on my engine it seems to ether have liquid coming from or somewhere around it and is making a hissing sound when the car is off while hot it seems to stop after cooling. Here are some pictures of it. http://imgur.com/ecooaxY and http://imgur.com/SoMOy4o
Oct 14, 2015 at 9:00 AM
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HMAC300
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I didn't go to you tube but check for a broken or missing vacuum hose and duct work going to throttle body for a hole in it.
Oct 14, 2015 at 9:54 AM
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LOGAN0708
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Ok I will check but can you tell me what is in this picture plz
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Oct 14, 2015 at 10:00 AM
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LOGAN0708
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also should I make sure it is tight
Oct 14, 2015 at 10:34 AM
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HMAC300
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we don't have escorts in US in 2003 model year with a 2.2L only 2.0. it may be an egr solenoid as the pic isn't very big but it shouldn't leak air or vacuum as it shouldn't do either. I don't mean by what you ask should it be tight? if it moves it may be broken there. I even looked at all switches sensors in ford manual and cannot find that part.
Oct 14, 2015 at 12:18 PM