Vacuum connections
Thread Starter
Race Director
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
Vacuum connections
Should there be a clamp on vacuum line connections or is the vacuum enough to seal the slip on connection? I've developed a vacuum leak and realized, that there are no connectors on any of the vacuum lines in the car. If the hose is new, but doesn't seal well causing a vacuum leak, what is the correct fix? Use a hose clamp or a smaller hose?
Racer
Joined: Dec 2002
Posts: 421
Likes: 2
From: Long Grove, IL
The only vacuum connection that uses a clamp is the power brake booster. All others are a friction fit. If you have a loose connection it is either due to incorrect sized or old vacuum hose (end is stretched out) or an incorrect sized fitting.
Where are you having the trouble?
Regards,
Jay
Where are you having the trouble?
Regards,
Jay
Safety Car
Joined: Feb 2002
Posts: 4,286
Likes: 4
From: Guam
All the hoses are made a little longer than they need to be. So cut off the short portion of the hose that goes in to the fitting and push it back in. The hose portion around the fitting will expand with age. So unless the hose is brittle, just cutting that short portion off and reinserting should fix the problem. 
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Originally Posted by Ak. Mal
Should there be a clamp on vacuum line connections or is the vacuum enough to seal the slip on connection? ?
you would be amazed at what a difference 1/32 of an inch makes on the connection.....make sure your hoses are not bigger then the ports.
Thread Starter
Race Director
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
The large vacuum port on the rear that I am running to the power brake booster definatly did not fit tight enough. In fact, neither did the hose of the front running to the pcv valve. As a test, I used a small hose clamp on both hoses. The car idles so much smoother now.
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