I recently had my distributor out to replace the vacuum advance on my '54. When I put it back together and started the engine, it didn't appear to be advancing. I grabbed the distributor to see if it would move and it would not rotate. Everything appears to be in place and the center indicator mark on the advance base is lined up with the mark on the block.
The new advance looked a bit different than the old one, but like many other things on this truck, I figured that the PO had just used the wrong part. The base plate on the old one had an angle to it, while the new one appeared straight (the vacuum diaphragm is parallel to the center indicator mark on the base). Looking in the catalogs, there only appears to be one style of vacuum advance from 47-59.
Any ideas what is going on here?
Thanks for any advice.
