Headlight operation ??
Thread Starter
Melting Slicks
Joined: Jun 2011
Posts: 2,096
Likes: 15
Headlight operation ??
Ok I'm trying to get the skinny on how the operation would work as if you drove your new Corvette off the showroom floor. I have replaced all the vacuum system on my 82 and the system works great except I loose the vacuum after the car is shut off but takes a few minutes.
Now from the factory your car should hold enough vacuum to operate the headlights what, one or two times?? Is this correct.
I can't figure out where I'm loosing the vacuum except I did but a used vac tank but did check it. It did leak down but took a long time and was extremely slow. There are no holes in it and the seams are good and thought the only place was where the fitting with the three holes meets the canister so I smeared a film of silicone around the base. That didn't help. So could the canister be my culprit? I'm pulling my hair out trying to get this right
Now from the factory your car should hold enough vacuum to operate the headlights what, one or two times?? Is this correct.
I can't figure out where I'm loosing the vacuum except I did but a used vac tank but did check it. It did leak down but took a long time and was extremely slow. There are no holes in it and the seams are good and thought the only place was where the fitting with the three holes meets the canister so I smeared a film of silicone around the base. That didn't help. So could the canister be my culprit? I'm pulling my hair out trying to get this right
Team Owner
Joined: Sep 2006
Posts: 31,273
Likes: 4,366
From: Westminster Maryland
Hi ac,
I think the only way to find a very slow leak as you describe is with a vacuum pump/with gauge like a mighty-vac.
This way you can test the individual components and hoses INDIVIDUALLY to see which has/have the slow leak (s).
Right now the system on my 71 is holding vacuum for a few hours. Rather than be overly concerned with how long the vacuum is held I think it's equally important that when you start the car the lights (and wipers on earlier cars) stay in the position they are as the system restores the vacuum... no 'winking' of lights (and wiper door).
Regards,
Alan
Did you replace the hoses? If not, try cutting about 3/8" off the ends of each hose. This gives the hose a new un-stretched place to seal.
I think the only way to find a very slow leak as you describe is with a vacuum pump/with gauge like a mighty-vac.
This way you can test the individual components and hoses INDIVIDUALLY to see which has/have the slow leak (s).
Right now the system on my 71 is holding vacuum for a few hours. Rather than be overly concerned with how long the vacuum is held I think it's equally important that when you start the car the lights (and wipers on earlier cars) stay in the position they are as the system restores the vacuum... no 'winking' of lights (and wiper door).
Regards,
Alan
Did you replace the hoses? If not, try cutting about 3/8" off the ends of each hose. This gives the hose a new un-stretched place to seal.
Thread Starter
Melting Slicks
Joined: Jun 2011
Posts: 2,096
Likes: 15
Hi ac,
I think the only way to find a very slow leak as you describe is with a vacuum pump/with gauge like a mighty-vac.
This way you can test the individual components and hoses INDIVIDUALLY to see which has/have the slow leak (s).
Right now the system on my 71 is holding vacuum for a few hours. Rather than be overly concerned with how long the vacuum is held I think it's equally important that when you start the car the lights (and wipers on earlier cars) stay in the position they are as the system restores the vacuum... no 'winking' of lights (and wiper door).
Regards,
Alan
Did you replace the hoses? If not, try cutting about 3/8" off the ends of each hose. This gives the hose a new un-stretched place to seal.
I think the only way to find a very slow leak as you describe is with a vacuum pump/with gauge like a mighty-vac.
This way you can test the individual components and hoses INDIVIDUALLY to see which has/have the slow leak (s).
Right now the system on my 71 is holding vacuum for a few hours. Rather than be overly concerned with how long the vacuum is held I think it's equally important that when you start the car the lights (and wipers on earlier cars) stay in the position they are as the system restores the vacuum... no 'winking' of lights (and wiper door).
Regards,
Alan
Did you replace the hoses? If not, try cutting about 3/8" off the ends of each hose. This gives the hose a new un-stretched place to seal.
Thread Starter
Melting Slicks
Joined: Jun 2011
Posts: 2,096
Likes: 15
Hi ac,
I think the only way to find a very slow leak as you describe is with a vacuum pump/with gauge like a mighty-vac.
This way you can test the individual components and hoses INDIVIDUALLY to see which has/have the slow leak (s).
Right now the system on my 71 is holding vacuum for a few hours. Rather than be overly concerned with how long the vacuum is held I think it's equally important that when you start the car the lights (and wipers on earlier cars) stay in the position they are as the system restores the vacuum... no 'winking' of lights (and wiper door).
Regards,
Alan
Did you replace the hoses? If not, try cutting about 3/8" off the ends of each hose. This gives the hose a new un-stretched place to seal.
I think the only way to find a very slow leak as you describe is with a vacuum pump/with gauge like a mighty-vac.
This way you can test the individual components and hoses INDIVIDUALLY to see which has/have the slow leak (s).
Right now the system on my 71 is holding vacuum for a few hours. Rather than be overly concerned with how long the vacuum is held I think it's equally important that when you start the car the lights (and wipers on earlier cars) stay in the position they are as the system restores the vacuum... no 'winking' of lights (and wiper door).
Regards,
Alan
Did you replace the hoses? If not, try cutting about 3/8" off the ends of each hose. This gives the hose a new un-stretched place to seal.
Just for the heck of it I checked my actuators again with my mighty vac and the drivers side leaked down but slowly and then the passenger side leaked down in only seconds. This was on the top port where the red line hose goes into. Do you think this is my problem and will a new seal kit take care of it or will I need new actuators?
AL
