Refer to A:01:01 and A:01:02 These are the specs for the vacuum advance and the mechanical advance. You really don't have to adjust these things, you just check to make sure they are working. What I do is set the base timing (13 degrees BTDC) at 750 RPM with the vacuum advance disconnected. After getting the timing set I rev the motor up and watch the timing mark, it should move some. You can actually measure it if you want to at the various speeds. Next I reconnect the vacuum to the vacuum advance and rev the motor up. You should see the timing mark move a whole lot now with the mechanical AND the vacuum advance working. Again, you can measure these things if you care to at the various vacuum settings. Generally if they work at all they are going to be close. You do not need a distributer tester to check these things out. A timing light, a tachometer, and a vacuum tester are all you need. If you get a lot of knocking (pinging) and you know the gas you are using is good than you may want to actually measure the total vacuum advance and the points it kicks in to see if that is the problem. BTW testing the vacuum advance like this checks out the ENTIRE vacuum advance system. When it is done on a tester you are only checking the vacuum advance unit on the distributer when you could have a problem with the vacuum solenoid, the hoses, leaks, or other things wrong that a tester would not be able to find. For more info refer to D:08:01 on the vacuum advance. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "ryanpwright" <yahoo1@xxxx> wrote: > David, > > Thank you for the response. I have sealed the vaccumn leaks (there > were disconnected hoses), the brass screws are all closed and the car > is running much better now. I still would like to check the timing, To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/