Vacuum advance

kd1wo · Post by **kd1wo** » Fri Oct 21, 2011 3:43 pm

I need to test the vacuum advance on dizzy. Does anyone know what inches of vacuum should be there?
Thanks

majicwrench · Post by **majicwrench** » Fri Oct 21, 2011 4:44 pm

"Inches" don't matter. It should hold vacuum, and when vaccum is applied, it should move. That's all there is to it. You can find in some older manuals at what point it should start to move rod, but that is TMI and not neccessary.
Keith

maytag · Post by **maytag** » Fri Oct 21, 2011 5:04 pm

majicwrench wrote:"Inches" don't matter.
Keith

PFFFFt! (in my best Michael Scott voice) "That's what SHE said!"

Keith is correct though. the amount of vacuum required to move that mechanism is minimal. there is an adjustment on the rod, you'll want to make sure that the slack is taken-up on the rod when vacuum is not present. that way when vacuum is applied it is actually moving the timing.... as opposed to just the rod.

make sure the mechanism is clean and lubed with a silicone grease. you want it moving freely. and remember to be sure you have no vacuum leaks leading TO the advance unit.

124JOE · Post by **124JOE** » Fri Oct 21, 2011 7:45 pm

you can stick the vacume line in your mouth and work it so its not very strong of a pull

Vacuum advance

Vacuum advance

Re: Vacuum advance

Re: Vacuum advance

Re: Vacuum advance