QUOTE(Dave_Darling @ May 10 2019, 09:50 PM)
It's not actually necessary to do that on a D-jet car, but it's a good habit to get into because it is absolutely critical to do in some other cars.
--DD
Actually, the procedure I noted is by the book. As I understand, disabling the vac. advance by pulling the vac line is necessary so that only centrifugal advance is in play while setting timing.