1979 Headlight Question

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Sep 4, 2013 | 10:41 PM

Hideki

Thread Starter

Racer

Joined: Mar 2007

Posts: 272

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From: West Hills CA

1979 Headlight Question

I just recently bought a '79 and when I shut the engine off one of the headlights (passenger side) pops up. When I restart the engine it'll lower itself, and when I shut the engine off again it'll stay down. Anyone know if this is a simple enough thing to sort out?

Sep 4, 2013 | 11:11 PM

Aussie79

Racer

Joined: Mar 2002

Posts: 406

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From: Maroochydore QLD

It's a vacuum leak and almost certainly in your actuators, check all of your vacuum lines/joints and replace both actuators, not very expensive and easy to do.

Sep 5, 2013 | 09:16 AM

Easy Mike

Team Owner

Joined: Jun 2000

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From: Southbound

Cruise-In II Veteran

Check/replace the white plastic filter in the main vacuum supply line first.

Sep 5, 2013 | 11:04 PM

Hideki

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Racer

Joined: Mar 2007

Posts: 272

Likes: 2

From: West Hills CA

Thank you both for the info, I will try that filter change first (seems much less expensive

). Does anyone have a picture of what/where that filter is?

Sep 6, 2013 | 12:18 PM

7T1vette

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Joined: Jan 2006

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From: Crossville TN

Most likely a bad actuator or vacuum relay for the right-side headlamp. And I'm leaning toward the actuator can (or the seal inside it).

Sep 6, 2013 | 01:26 PM

Easy Mike

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From: Southbound

Cruise-In II Veteran

Quote:

Originally Posted by Hideki

... Does anyone have a picture of what/where that filter is?...

In the main vacuum supply hose running from the intake manifold fitting. Follow the hose along and you'll see it.

Sep 23, 2013 | 11:32 PM

Hideki

Thread Starter

Racer

Joined: Mar 2007

Posts: 272

Likes: 2

From: West Hills CA

So when I check my vacuum lines I notice mine is oriented different than any I've seen (the line coming off the PB booster). Would being oriented on its side affect anything? I am contemplating just cutting the existing hoses to make the thing sit correctly, but that metal hard line appears closer to the carb than the pictures I've seen so I don't necessarily want that thing in the way... Any advice?