77 rt side headlight stuck open
Thread Starter
4th Gear
Joined: Jun 2013
Posts: 4
Likes: 0
77r t side headlight stuck open
hello all. brand new guy here. I have a 77 took the 350 out and put in a 383. runs good but only 9 lbs vac at idle. I don't reall care but my headlights, which were always slow wouldn't open. no problem... I,ll help em. well that worked once. now the rt side is STUCK open. lt side opens and closes with a nudge but rt side will not budge. did a search and found nothing about stuck lights. car doesn't get driven much so I don't mind helping them open/close but stuck open sucks. any thoughts?
thanks in advance
dave in north central pa.
thanks in advance
dave in north central pa.
Le Mans Master
Joined: Aug 2006
Posts: 7,413
Likes: 1,552
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Pull down on this part from underneath.
The other side should not just push down, it needs an adjustment.
The other side should not just push down, it needs an adjustment.
Le Mans Master
Joined: Aug 2006
Posts: 7,413
Likes: 1,552
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Many times the seal in the actuator goes bad.
You can jump to that part or go through the whole system.
http://www.corvette-101.com/vacuum.htm#top
For me getting or keeping everything working is part of pride of ownership.
You can jump to that part or go through the whole system.
http://www.corvette-101.com/vacuum.htm#top
For me getting or keeping everything working is part of pride of ownership.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
Is the engine only capable of producing 9" Hg, or do you think you have vacuum system leaks? If you are not sure, disconnect all the vacuum 'source' lines from the carb and intake manifold...except one, so you can hook a vacuum gauge to it. Fire the engine and adjust the carb and timing for max vacuum. Then you will know what vacuum level the engine is capable of producing. If it really is only 9" Hg, then you are on the borderline of your vacuum systems functioning.
Pro
Joined: Aug 2003
Posts: 673
Likes: 0
From: Jackson Ms
Your lights will work with only 9 lbs. vac at idle.
I have about the same 9 lbs. with my setup. (355 with a Holly sysm. max kit 425hp)
I had a problem with mine and after looking it over I found a relay bad on mine and I bypassed it and the vac. tank and split the out on the good relay so it works both actuators. So far it has worked 8 yrs like this.
I have about the same 9 lbs. with my setup. (355 with a Holly sysm. max kit 425hp)
I had a problem with mine and after looking it over I found a relay bad on mine and I bypassed it and the vac. tank and split the out on the good relay so it works both actuators. So far it has worked 8 yrs like this.
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