vaccum gauge

[Hellbert]

today i found out just how much stuff one can tell you. what are they? i dont remember haha. like i was told if when you give the car gas the pressure will drop then it should come back to normal (18-20 in) but if it keeps droping then you have some sort of exhaust restriction. what are some other things? thanks a lot

 

[hcivic.com]

the manual tells you waht you can do with them

 

[Hellbert]

dang i never even thought to look in the manual. guess ill check that out, i appriciate it man. later