One way vacuum valve.
Thread Starter
Le Mans Master
Joined: Jun 2019
Posts: 5,484
Likes: 2,193
From: Loveland
One way vacuum valve.
I purchased this valve from one of the suppliers. It's for a 68 vet. It's supposed to be a one way valve. When I blow into the valve, air will move both directions. Has anyone purchased this valve and tested it before installing? It's a very common design. I am wondering if they are all the same. The one on my car will only let air go one way.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Sometimes the repro valves stick... If they do you can put a drop of oil in it which should solve any issue on a new valve.
I did a video on how to check what is called the "check valve"
go to this link and watch the video it'll show you how to test the valve. I think it's around 1.50 mark.
I did a video on how to check what is called the "check valve"
go to this link and watch the video it'll show you how to test the valve. I think it's around 1.50 mark.
Thread Starter
Le Mans Master
Joined: Jun 2019
Posts: 5,484
Likes: 2,193
From: Loveland
Good video... I have checked the valve with my MIGHTY vac mouth. I will try a few drops of oil. Nope,,, didn't help. I might try some brake clean. Nope,,, didn't help. I tried blowing air through it also. The valve should snap shut with ease, as it is designed to hold vacuum. The supplier is sending another valve.
I cut the valve open. The rubber baffle must have been deformed.
I cut the valve open. The rubber baffle must have been deformed.
Last edited by kodpkd; Feb 27, 2020 at 12:41 PM.
Safety Car
Joined: Sep 2005
Posts: 4,226
Likes: 643
From: Orange County Ca
A few years ago, I went through a couple that were bad right from the vendor. After replacing 2 and asking for my money back, the vendor complained that he'd gotten a lot of returns and that I shouldn't be so picky. WTF??? Got my refund and crossed him off my list of sellers.
A lot of repo parts suck.
A lot of repo parts suck.
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,028
A few years ago, I went through a couple that were bad right from the vendor. After replacing 2 and asking for my money back, the vendor complained that he'd gotten a lot of returns and that I shouldn't be so picky. WTF??? Got my refund and crossed him off my list of sellers.
A lot of repo parts suck.
A lot of repo parts suck.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Buying a NOS 40+ year-old part with a rubber valve wouldn't seem like a good idea. But, I fully understand that the likelihood of success might be about the same as buying an aftermarket 'new' part......
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
One thing I will say.... if you have the plastic version of the mighty vac... (or migty vac) you might want to check it first.... they are junk and made from plastic... Mine is the old brass version that I can rebuild if it fails... but the new plastic versions made in Gina..... are junk..
IMHO,
Willcox
IMHO,
Willcox
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,028
I have found two. Both worked on friends cars zero issues.Both friends had negative repop results.
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