Join Date: Sep 2000
Re: slow to open /68 RS headlight doors
If the hoses were reversed the operation of the doors will be reversed.
How much vacuum do you have at the vaccum valve?
Are they slow when the vacuum valve is worked manually (not using the light switch?
Most likely some of the vacuum is bleeding past the canister seal (vacuum motor) to the closed side of the canister.
Try opening them with the lower hose removed from the vacuum valve, does it work better, if so, one or both of the canisters is leaking internally.
68 Dana 302, 68 rs 327 daily driver/family car, 71 rs, track car/ driver, 68 firebird 400, 70 formula 400, 73 type LT, 98 TA, 2 goofy kids and an incredible wife.