Vacuum Issues
Thread Starter
Instructor
Joined: Mar 2010
Posts: 155
Likes: 4
From: Florida
Vacuum Issues
First let me start by wishing everyone a Merry Christmas.
Ok here is the issue
When I first start the car (71 350 w/ 4 speed, factory a/c.)
The headlights as well as the wiper door open for about 5 seconds then close.
All the relays, actuators and vacuum lines as well as check valve and filter are brand new. The Vacuum tank does hold vacuum!
Prior to replacing all the above items this never happened before.
Not sure if this matters but also had the car converted to power brakes with all new components.
The only items that were not replaced are the headlight switch and manual over ride switches.
Hopefully someone has experienced this issue.
Gives me something to do while the car is put away for the winter.
Thanks
Ok here is the issue
When I first start the car (71 350 w/ 4 speed, factory a/c.)
The headlights as well as the wiper door open for about 5 seconds then close.
All the relays, actuators and vacuum lines as well as check valve and filter are brand new. The Vacuum tank does hold vacuum!
Prior to replacing all the above items this never happened before.
Not sure if this matters but also had the car converted to power brakes with all new components.
The only items that were not replaced are the headlight switch and manual over ride switches.
Hopefully someone has experienced this issue.
Gives me something to do while the car is put away for the winter.
Thanks
Melting Slicks
Joined: Jun 2005
Posts: 2,239
Likes: 74
From: Palatine, Peoples Republic of Illinois
St. Jude Donor '09-'10-'11-12-'13-'14-'15-'16-'17-‘18
NCM Sinkhole Donor
Beat way I've found to trace these problems down is with some vice grips. Start at the canister and clamp off a line. If everything works with certain line clamped off then you know where to start looking. Continue to clamp lines after each junction or valve until you find the one that's not working. Hopefully the problem will not be behind the dash.
Thread Starter
Instructor
Joined: Mar 2010
Posts: 155
Likes: 4
From: Florida
Beat way I've found to trace these problems down is with some vice grips. Start at the canister and clamp off a line. If everything works with certain line clamped off then you know where to start looking. Continue to clamp lines after each junction or valve until you find the one that's not working. Hopefully the problem will not be behind the dash.
Hopefully is right
Melting Slicks
Joined: Jul 2009
Posts: 3,264
Likes: 3
From: Vero Beach FL
Sad to say just because its "new" does not mean its not broke. I replaced my vacuum lines and some of the new did not fit (they leaked) I replaced both headlight actuators one of the new ones had a torn "witches hat" or seal. I replace the wiper arm shut off valve and the first one crumbled. I do not have a lot of faith in reproduction parts.
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Thread Starter
Instructor
Joined: Mar 2010
Posts: 155
Likes: 4
From: Florida
Sad to say just because its "new" does not mean its not broke. I replaced my vacuum lines and some of the new did not fit (they leaked) I replaced both headlight actuators one of the new ones had a torn "witches hat" or seal. I replace the wiper arm shut off valve and the first one crumbled. I do not have a lot of faith in reproduction parts.
Should be here next week I will update when they are installed.
Merry Christmas
Melting Slicks
Joined: Jul 2009
Posts: 3,264
Likes: 3
From: Vero Beach FL
MERRY CHRISTMAS
Melting Slicks
Joined: Jun 2005
Posts: 2,239
Likes: 74
From: Palatine, Peoples Republic of Illinois
St. Jude Donor '09-'10-'11-12-'13-'14-'15-'16-'17-‘18
NCM Sinkhole Donor
I'm afraid the filter and check valve are probably the least likely cause of your problem. You said the canister is holding vacuum so you know the check valve works. And the filter is ... well, just a filter.
The ORIGINAL and bestest
Joined: Oct 2000
Posts: 10,009
Likes: 240
From: Toronto Ontario
Toronto Events Coordinator
First step is make sure you have it all hooked up correctly; very easy to have a hose swapped.
Second step, get a long length of vacuum hose and hook it up to your vette's vacuum system, and then hook it up to a different car with the engine running outside the garage; then close the garage door and listen for leaks. An alternate method is to get a vacuum pump and place it outside while you listen for leaks.
Or, convert the headlights and wiper door to electric!!!!
Second step, get a long length of vacuum hose and hook it up to your vette's vacuum system, and then hook it up to a different car with the engine running outside the garage; then close the garage door and listen for leaks. An alternate method is to get a vacuum pump and place it outside while you listen for leaks.
Or, convert the headlights and wiper door to electric!!!!