69 RS hide away head lights (vacum testing) - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
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post #1 of 4 (permalink) Old Jun 16th, 02, 05:37 PM Thread Starter
 
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How do you troubleshoot the actuators and the rest of the vacum lines correctly. Is there a order to follow? I have a hand operated vacum pump and tried but didnt really get any where. I would like to know how to tell if the actuators are still good then If I have enough vacum I could probabally assume the lines need replaced. The doors do move somewhat once in a while. I had alot of fluttering on the vacum gage at the manifold then it seemed to get steady at the "splitter" where the main line gets turned in to two. I had aprox. 10"of vacum at this point and by the time I get to the actuators it is 4 to 5".This was done with the lights on. Exactly how much vacum do you need to operate properly? I really want to get these things working Any help appreciated. Steve

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post #2 of 4 (permalink) Old Jun 17th, 02, 04:56 AM
 
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The best way to test the actuators is to do a blow test on each side. The easiest way to do this is to take the actuators out of the car. Push the actuator stem all the way in and blow on one of the ports. You should not get any air coming out of the other port unless the piston is moving and is exhausting the air that is above the piston. If no air comes out the second port reposition the piston by pulling the stem out to several locations and repeating the test. I found with my old actuators no matter how hard I blew the piston would not stroke and I always had leakage on the other port. With my new ones I would blow lightly with no leakage and when blown hard they would stroke all the way one way or another. If the actuators are working then I would check for leaks in your hoses or rust plugging up your lines giving you a restriction. This is a pretty simple sytem to figure out it just takes time and patience.
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post #3 of 4 (permalink) Old Jun 17th, 02, 06:11 AM
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One could rig up a 20-30 gal air tank and use an A/C vacuum pump to provide a vacuum source. Then use an air mattress nipple to go to each hose.

There are ways......

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post #4 of 4 (permalink) Old Jun 17th, 02, 07:54 AM Thread Starter
 
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Thanks,for the replys. Does anyone know how much vacum needs to be present at the actuators for proper operation? Thanks,Steve
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