How much vaccum?

[jivepepper]

How much vacuum?

How much vacuum should my car have at idle?


Thanks

 

[CanadaStang]

How much vaccum should my car have at idle?


Thanks

17-22 in./Hg.

 

[jivepepper]

17-22 in./Hg.

I'm using a bar type boost gauge and only goes to -1 on the vac side and 1.5 on the boost side which is 15psi I think.