Headlight Troubleshooting
Thread Starter
Drifting
Joined: Oct 2003
Posts: 1,348
Likes: 18
From: Dallas Texas
Headlight Troubleshooting
HI,
having a little headlight problem on a 74. The lights close perfectly but when trying to open them, they attempt to open.. but only get about an inch before slowly settling back down. any thoughts on this?
I know there have been a lot of headlight questions before so does anyone have a link to a previous post that has a troubleshooting guide or something? I gave a quick search but couldnt find anything
THANKS
having a little headlight problem on a 74. The lights close perfectly but when trying to open them, they attempt to open.. but only get about an inch before slowly settling back down. any thoughts on this?
I know there have been a lot of headlight questions before so does anyone have a link to a previous post that has a troubleshooting guide or something? I gave a quick search but couldnt find anything
THANKS
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Probably have one or both seals in the actuators leaking.Try pinching with pliers the green hose going to the drivers side actuator and see if that helps the pass side to come up....then pinch the pass. side green hose and see if the drivers side will come up.
Racer
Joined: Dec 2007
Posts: 445
Likes: 2
From: Thomastown Mississippi
If it's the same setup as my '77, it's probably the actuators leaking or the relays, located between the actuators. I think 99 percent of the time this is where the trouble is with these lights.
Instructor
Joined: Jul 2005
Posts: 140
Likes: 0
From: Sunnyvale TX
thanks for the replys
my vacuum pump is broken right no still waiting for a part to put it back together so i cant check the actuators yet. But it seems wierd that both actuators and both relays would get the same slow leak at the same time..
could a bad check valve cause this? i can put a vaccum on the end w/ 1 nipple and ittl hold but i can also blow through it and it has a faint whistling.. is it supposed to do that or could that be my issue of not opening but closes great.
THANKS
my vacuum pump is broken right no still waiting for a part to put it back together so i cant check the actuators yet. But it seems wierd that both actuators and both relays would get the same slow leak at the same time..
could a bad check valve cause this? i can put a vaccum on the end w/ 1 nipple and ittl hold but i can also blow through it and it has a faint whistling.. is it supposed to do that or could that be my issue of not opening but closes great.
THANKS
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
No check valve wont cause what yours is doing.The check valve is more for reserve vacuum after you turn the engine off.Both acuators dont have to be bad just one with a major leak after all both sides are connected and they will effect each other.
Safety Car
Joined: Feb 2006
Posts: 3,557
Likes: 0
From: Ridgeway VA
Double check your vacuum hoses, too. Make sure they have a tight fit. If the hose is britle from old age then there might be a slight leak where they slide on to the actuators/relays. If you have plenty of hose to slide up, simply cut off some of the end and slide the newer portion on the actuators/relays.
5th Gear
Joined: Jun 2006
Posts: 5
Likes: 0
HI,
having a little headlight problem on a 74. The lights close perfectly but when trying to open them, they attempt to open.. but only get about an inch before slowly settling back down. any thoughts on this?
I know there have been a lot of headlight questions before so does anyone have a link to a previous post that has a troubleshooting guide or something? I gave a quick search but couldnt find anything
THANKS
having a little headlight problem on a 74. The lights close perfectly but when trying to open them, they attempt to open.. but only get about an inch before slowly settling back down. any thoughts on this?
I know there have been a lot of headlight questions before so does anyone have a link to a previous post that has a troubleshooting guide or something? I gave a quick search but couldnt find anything
THANKS
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