Problems with Air Grabber on 70RR

[Lucky Lar]

If I bypass everything and attach a vacuum line from the fitting on the intake manifold to the air grabber valve on the hood it opens right up


If I insert the vacuum canister between the vacuum fitting on the intake manifold & the air grabber valve on the hood (still bypassing everything, switch ect.) It won’t open all the way


Do the vacuum canisters go bad?


Can the vacuum canisters be fixed ?


Also can anybody explain how the vacuum canister actually works?


Thanks, all comments would be appreciated

 

[rick68b5]

The canister is bad probably where the bracket is welded to the can itself I've seen them crack from vibration there

 

[Lucky Lar]

The canister is bad probably where the bracket is welded to the can itself I've seen them crack from vibration there

I have seen 2 types of canisters one has ridges like the photo below
and the one i have is all smooth, do you know which one is correct?