Still having problems with Wiper Door
Thread Starter
Racer
Joined: Nov 2000
Posts: 449
Likes: 0
From: Greensboro, nc usa NC
Still having problems with Wiper Door
71 - convertible 454 -
I have been having the problem with the wiper door - coming up when I turn the car off. I installed a new Vacuum check and still not fixing the problem - it is now coming up when I turn on the car. And then when I turn off the car it goes down and then back up again. The lights are really working great and I dont want to mess that up.
But here is the strange thing - when I turn on the lights with the car running the wiper door will then go down...
I have check out diagrams and traced all the hoses correctly - the only thing I havent seem to find is the "Nipple to vacuum source" part that wilcox describes in his diagram. Could that be the problem..??
thanks
Mark
I have been having the problem with the wiper door - coming up when I turn the car off. I installed a new Vacuum check and still not fixing the problem - it is now coming up when I turn on the car. And then when I turn off the car it goes down and then back up again. The lights are really working great and I dont want to mess that up.
But here is the strange thing - when I turn on the lights with the car running the wiper door will then go down...
I have check out diagrams and traced all the hoses correctly - the only thing I havent seem to find is the "Nipple to vacuum source" part that wilcox describes in his diagram. Could that be the problem..??
thanks
Mark
Last edited by ultimix; Jan 16, 2011 at 10:10 PM.
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 3,665
Likes: 341
Mark, you have a vac leak. I bought a tool a couple of years ago that saved me tons of hours, it is expensive and I know most will never get one. It is a emissions tester that sends smoke through the lines, find a shop that has one and hook it up to the small vac line on the trico valve. You will be amazed in how quick it finds the leak.
Thread Starter
Racer
Joined: Nov 2000
Posts: 449
Likes: 0
From: Greensboro, nc usa NC
Mark, you have a vac leak. I bought a tool a couple of years ago that saved me tons of hours, it is expensive and I know most will never get one. It is a emissions tester that sends smoke through the lines, find a shop that has one and hook it up to the small vac line on the trico valve. You will be amazed in how quick it finds the leak.
thanks again
MArk
Melting Slicks
Joined: Oct 2010
Posts: 2,276
Likes: 337
From: "ɹǝpunuʍop", Adelaide, South Australia
but i had a similar problem only recently with my wiper door as well, http://forums.corvetteforum.com/c3-t...iper-door.html
i fixed it by using this method, http://forums.corvetteforum.com/c3-t...ay-valves.html
and reading here, http://www.corvette-101.com/
hope this helps
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 3,665
Likes: 341
I am not sure if you can buy a can of smoke. My emission machine uses less than 4 psi of air. You will find leaks really quick, I was on the ledge before I bought it because they are expensive, but it has saved me so many hours it was well worth it. It is not worth it for this gentleman to purchase one, but I bet he can pay some $20 just to hook on up and find his leak.
Justin
Justin
Thread Starter
Racer
Joined: Nov 2000
Posts: 449
Likes: 0
From: Greensboro, nc usa NC
i'm no expert, more like this
but i had a similar problem only recently with my wiper door as well, http://forums.corvetteforum.com/c3-t...iper-door.html
i fixed it by using this method, http://forums.corvetteforum.com/c3-t...ay-valves.html
and reading here, http://www.corvette-101.com/
hope this helps
but i had a similar problem only recently with my wiper door as well, http://forums.corvetteforum.com/c3-t...iper-door.html
i fixed it by using this method, http://forums.corvetteforum.com/c3-t...ay-valves.html
and reading here, http://www.corvette-101.com/
hope this helps
Mark
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Thread Starter
Racer
Joined: Nov 2000
Posts: 449
Likes: 0
From: Greensboro, nc usa NC
Thread Starter
Racer
Joined: Nov 2000
Posts: 449
Likes: 0
From: Greensboro, nc usa NC
Well the smoke in a can wont work.. its not really smoke they say..
Here is an idea -
What about - using an air compressor and pump air into the system and LISTEN for the leak... just hard to hear when the car is going..
thoughts??
Here is an idea -
What about - using an air compressor and pump air into the system and LISTEN for the leak... just hard to hear when the car is going..
thoughts??
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 3,665
Likes: 341
Well the only issue with that is the pressure can create a leak in a vacuum system. Example I have had some vac tanks on 68-72 cars hold pressure just fine but leak under vac. My smoke machine is using less the 4psi and I don't think you would hear that. I think it would be easier to find someone with one and try that.
Thread Starter
Racer
Joined: Nov 2000
Posts: 449
Likes: 0
From: Greensboro, nc usa NC
Thread Starter
Racer
Joined: Nov 2000
Posts: 449
Likes: 0
From: Greensboro, nc usa NC
Thread Starter
Racer
Joined: Nov 2000
Posts: 449
Likes: 0
From: Greensboro, nc usa NC
OK!!! Found the problem.. and hopefully the only problem -
I used my air compressor at very very low pressure and connected it to the smaller hose from the value check - and I could easily hear the air leaking.. This is the problem.
I could not see how messed up it was - because the wiper blade rests right on top of it. It looks like the blade is the thing that caused this to break.. anyone heard of this.
Anyways.. I am very happy I found it!!!
I used my air compressor at very very low pressure and connected it to the smaller hose from the value check - and I could easily hear the air leaking.. This is the problem.
I could not see how messed up it was - because the wiper blade rests right on top of it. It looks like the blade is the thing that caused this to break.. anyone heard of this.
Anyways.. I am very happy I found it!!!
Melting Slicks
Joined: Feb 2006
Posts: 3,428
Likes: 5
From: Japan
I was going to suggest you take a look at that little valve until I got to the bottom of your thread...mine did the same thing a few years back. I think it's kinda the Achilles' heel of the wiper door system. The aftermarket replacement that I put on the car was pretty crappy quality as well; it's only a few years old and the rubber seal around it is in about the same shape as yours. Don't know if anybody's making decent-quality repops these days, seems like everything comes from China and the rubber is very poor quality...good luck.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
OK!!! Found the problem.. and hopefully the only problem -
I used my air compressor at very very low pressure and connected it to the smaller hose from the value check - and I could easily hear the air leaking.. This is the problem.
I could not see how messed up it was - because the wiper blade rests right on top of it. It looks like the blade is the thing that caused this to break.. anyone heard of this.
Anyways.. I am very happy I found it!!!
I used my air compressor at very very low pressure and connected it to the smaller hose from the value check - and I could easily hear the air leaking.. This is the problem.
I could not see how messed up it was - because the wiper blade rests right on top of it. It looks like the blade is the thing that caused this to break.. anyone heard of this.
Anyways.. I am very happy I found it!!!
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 3,665
Likes: 341
I was going to suggest you take a look at that little valve until I got to the bottom of your thread...mine did the same thing a few years back. I think it's kinda the Achilles' heel of the wiper door system. The aftermarket replacement that I put on the car was pretty crappy quality as well; it's only a few years old and the rubber seal around it is in about the same shape as yours. Don't know if anybody's making decent-quality repops these days, seems like everything comes from China and the rubber is very poor quality...good luck.
