Vacuum Question?????
Thread Starter
Racer
Joined: Dec 2001
Posts: 489
Likes: 0
From: Orlando Florida
Vacuum Question?????
I know that this may come as a shock to most of you, but I have some problems with my vacuum system. I feel pretty good about my vacuum lines, and I have replaced most of the valves and seals that should be there. My car wants to die when sitting at red lights, but runs great the rest of the time. I know that I have leaks and will be buying a vacuum tester today to help resolve those issues. My question is in reference to the check valve up by the driver side windshield. I replaced the valve about 6 months ago due to my wiper door and headlights not popping up. When I turn the car off, I can hear all of the vacuum escaping from the valve. I read that it should hold the vacuum, but I'm not sure. It makes sense that if it releases the vacuum when the car is off, that it's releasing the vacuum when the car is running as well. Am I correct in this assumption????? If there is a problem with the check valve, I can replace it, but why would it only last 6 month's when the previous one lasted for years?????
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
Re: Vacuum Question????? (Warp70)
That would be a good place to start with your new vacuum tester :D the checkvalve. Should free flow toward the motor and hold vacuum the other way :cheers:
Advanced
Joined: Apr 2002
Posts: 62
Likes: 0
From: Kewaunee Wi
Re: Vacuum Question????? (Warp70)
If I remember right , there is suppose to be a little filter before the check Valve to prevent dirt from shortening the life of the filter. Also make sure there is no leaks in the vacuem canister.
Team Owner
Joined: Jun 2001
Posts: 23,353
Likes: 1,054
From: Virginia USA
Re: Vacuum Question????? (Warp70)
When I turn the car off, I can hear all of the vacuum escaping from the valve. I read that it should hold the vacuum, but I'm not sure. It makes sense that if it releases the vacuum when the car is off, that it's releasing the vacuum when the car is running as well. Am I correct in this assumption????? If there is a problem with the check valve, I can replace it, but why would it only last 6 month's when the previous one lasted for years?????
John
Thread Starter
Racer
Joined: Dec 2001
Posts: 489
Likes: 0
From: Orlando Florida
Re: Vacuum Question????? (theandies)
Do you have a filter between the intake manifold port and the check valve? If you don't have the filter dirt may have damaged your new valve.
John
John
Melting Slicks
Joined: Sep 2000
Posts: 2,401
Likes: 416
From: Chester Virginia
Re: Vacuum Question????? (Warp70)
from Ecklers or any other Corvette parts supplier. It costs about $5.00. It is a little white plastic housing about the same size as the check valve.
Roger
Roger
