Re: 1941 Packard 356 8 cylinder - Low Vacuum After Rebuild

Posted by hynesjm On 2021/9/12 23:41:18

Update: The Manifold IS leaking.

I made an adapter with a tire stem, piece of a tin can and a silicone coupler with hose clamps so I could slightly pressurize the intake manifold. I then put about 5 PSI of air to it and sprayed the intake ports with soapy water and could see at least 3 of the 4 inlet connections blowing bubbles.

I will R&R the manifolds and report back to see if that improves the situation...a good case of K.I.S.S right here :)