Lights not popping up

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Aug 9, 2007 | 09:40 AM

ChancWds

Thread Starter

Instructor

Joined: Nov 2005

Posts: 229

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From: Plano TX

Lights not popping up

After removing and replacing my radiator, shroud and radiator bracket that holds the radiator in place (had the peacock welded back on after trying to change the fluid and twisted off of radiator), the front lights are not popping up. I'm not sure if I damaged something in the process. The lights go down, but there is not enough vacuum to bring them up.. They were working o.k (they never work great) before the radiator work. Any thoughts?

Aug 9, 2007 | 09:42 AM

corvetteload

Melting Slicks

Joined: Aug 2005

Posts: 2,359

Likes: 15

From: Confusion

if they don't open at all look for a line that is off. If they are slow, relays went bad.

Aug 9, 2007 | 10:15 AM

justanotherdoe

Racer

Joined: Mar 2006

Posts: 366

Likes: 1

From: Houston Texas

The light buckets need vacuum to pull them down, so it is probably loose/disconnected control vacuum to the relays.

Aug 9, 2007 | 12:24 PM

Bob Onit

Melting Slicks

Joined: Mar 2006

Posts: 3,342

Likes: 7

From: Connecticut

I think this is for a '73
Might help ya!

*Edit* Removed picture as it was incorrect.

Last edited by Bob Onit; Aug 9, 2007 at 02:12 PM.

Aug 9, 2007 | 01:14 PM

...Roger...

Race Director

Joined: May 2006

Posts: 16,528

Likes: 53

From: Dayton, Ohio

Quote:

Originally Posted by ChancWds

Chanc pinch off the large green hose going to the one of the actuators (L or R) and see if the opposite one comes up-then reverse and go to other side.If pinching the green makes the opposite come up then the one you pinched has a bad witches hat seal.
If you would like you can also try pinching off the yellow going over to the wiper door just in case it is leaking.

Bob use this corrected diagram that old one is wrong at the headlight switch.

Aug 9, 2007 | 01:18 PM

Bob Onit

Melting Slicks

Joined: Mar 2006

Posts: 3,342

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From: Connecticut

Will do Roger.... Thanks

Aug 10, 2007 | 10:15 AM

ChancWds

Thread Starter

Instructor

Joined: Nov 2005

Posts: 229

Likes: 0

From: Plano TX

Thanks to all for the reply's. I will let you know what the problem is/was this weekend.

Aug 10, 2007 | 12:30 PM

Stewart's74

Safety Car

Joined: Aug 2000

Posts: 3,943

Likes: 44

From: Florham Park NJ Port Credit Ontario

You probably pinched the vacuum hose which runs down the inside driver side of the engine compartment. There is a gap in the rad support that gives the vac hoses enough room to operate properly. If the shroud was moved during the rad work, the hose may have been pinched.

Stu