Vacuum Operated Headlights
#1
Instructor
Thread Starter
Vacuum Operated Headlights
My headlights work VERY Slowly. Can not find leak. Should I look at the actuators or the relay. By the way, my 1969 has one relay like the 68's. Not one each as the 69 diagram indicates. My 69 was made in October 1968.
Thanks
Thanks
#3
Racer
The passenger side head light on my79 would take about a minute and a half to come up. I replaced the right side relay valve and actuator. It was a little better but would still take 45 to 60 seconds to come up. Turned out the pivot joint was corroded. Sprayed it up with some penetration oil. It is still a little slower than the drivers side (which pops up immediately), but will come up in about 10 to 15 seconds. Should get better as the oil works its way into the joints.
#4
Burning Brakes
Do you have a hand vacuum pump? If not then you should invest in one, especially as a C3 owner. They are relatively inexpensive and are so handy to have for headlights and brakes.
There is a site www.corvette-101.com that has a section on how to trace problems in headlights.
There is a site www.corvette-101.com that has a section on how to trace problems in headlights.
#5
Burning Brakes
I had similar issues. I replaced the actuator seals and that helped. I then rebuilt the relays and that solved my problem. My lines were good. Search for relay rebuild and you will find the threads. I added o-rings to the small shuttle in the relay and that improved sealing dramaticlly. Also, you can replace the felt filters to keep dirt out of the relays in the future.
#6
Team Owner
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#7
Race Director
I has issues with my system. Replaced everything and now it works perfect. It cost me around $300 for all the parts and a rebuild kit. You will nickle and dime yourself until everything is replaced anyway.
#8
Instructor
Thread Starter
Thank you all. Especially ROGER. I must have a leak in the winshield wipper vacuum part of the system. I plugged that side and the headlights worked great. Just picked up a vacuum pump to track down the leak.
Thanks
Thanks
#10
Race Director
Your Welcome ,glad that helped.
One of the first things I like to do on these systems is divide them up,makes things a little easier to understand and then find the leaks.
One of the first things I like to do on these systems is divide them up,makes things a little easier to understand and then find the leaks.