Ok ran it 10 miles and turned it off..then started it up immediately and it started right up….waited 10 minutes and it would not start….help pedal down and after about 7 seconds of coughing it started right up! So you weee correct! Is there something I should do to correct this or just leave as is knowing it will start…also I changed out the wa-1 530s carb for an exact replacement….when I installled new carb there is a plastic black part with copper spring under it held in by a single screw..my old carb was missing this piece and spring it only had the screw still in it…I attached photo wondering what this is and do I have to do anything more with it? Thanks very much for the help…

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Ok got it…I will try taking it out tomorrow and do the tests..thanks ! Will get back with results

So for back to Packard..new vacuum advance in and works great…carb is set correctly I believe and car runs well…however when I drive for about 30 minutes And park it …it won’t start up again ? It’s turning over and it’s not flooding….when I hold the choke plate all the way open it will start right up…or if I wait a couple hours it will start right up…it’s the wa-1 automatic choke…I’m not sure what’s happening to the choke when the car comes to rest…the choke plate is almost all the way open in this situation and needs only to be pushed the rest of way open to start…assuming it’s not getting enough air after turning engine off? Any help appreciated

Ok great I assume that’s what I have…thanks for all your info and patience…will update end of week!

It is an auto lite but it still looks like the distributor spins to the vacuum…as far as I can tell…as it is now the distributor when installed freely rotates to the left maybe an 1/8 th of a full turn before it stops… I can’t see any arm going into the distributor.?

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Was able to get vacuum removed…. I thought the vacuum moved an arm within the distributor attached to vacuum advance….on mine it appears that the vacuum arm is bolted to a adjustable arm that then rotates the actual distributor body? Is that correct? Or a. I missing something? I thought the arm moved and was related to the spring mechanism within the distributor …my first time doing this ….I don’t think this vacuum has ever worked since I’ve owned it I. Early nineties …it is definitely not working…any advice prior to my new unit arriving would be great!!!

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Ok…new old stock unit being delivered Wednesday I’ll update thanks!

Took breaker plate off and it appears springs and everything is in good shape and moves freely…doesn’t move much but I don’t know how much it should move

Ok great..I will get one and replace…do I have to remove the distributor to replace..I have never done that..thank you

Finally back working on Packard…bought vacuum pump and attached to vacuum unit attached to distributor…. It does not hold any vacuum..needle does not even move when pumping and no movement in distributor…. I’m assuming I need to replace vacuum unit…any guidance would be appreciated tks