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Quote:
Originally Posted by Yotehunter66
. . . The manifold vacuum line has to be in place to adjust the timing, correct?
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I haven't got a '56 Shop Manual.
The '55 Shop Manual I have with instructions for a similar distributor, but with one vacuum line, says to disconnect and plug the line.
If the dual vacuum canister isn't fully functional the timing won't advance properly, if at all, and the engine can be damaged.
see this link...
https://www.ctci.org/gilsgarage/Crac...stManifold.php
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