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Forum: 70-72 GTO Tempest & LeMans TECH 08-29-2020, 12:40 PM
Replies: 10
Views: 1,814
Posted By mgarblik
Best way to check the Vacuum actuators, (doors),...

Best way to check the Vacuum actuators, (doors), is to attach each to a hand vacuum pump. If they are good they should close with the pump and hold vacuum. In the real world of modern muscle cars...
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