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					Originally Posted by  jdilbeck
					 
				 
				How do I tell if the brake booster vacuum line is leaking? My brake pedal sticks in the downward position and I sometime have to raise it with my foot. I believe is is either the booster or vacuum line. I have a 1999 Boxster. Any help would be appreciated. 
			
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that is not a leak you have. when air leaks out of booster line, it will be hard to apply the brake and not the other way around. if i was you, i would definitely have the brake master cylinder and booster checked.