96 V6Engine 12valve
Vacc Pressure 18-20

Vs

99.5 A4 1.8T
Vacc Pressure 10-11


Ok, I got rid of my old A4 but I had vaccumm pressure gauge installed. Iwas 18-20


On my new car 1.8T 99.5
it's 10-11

Is that correct? Why do i have a feeling it should be 16-19 at least.

 

it should be between 18-21

 

Sounds like a leaky. Should be around 20 for sure.

 

You got a leak.

 

Vacuum is opposite pressure. Vacuum pressure is an oxymoron. Pressure is usually measured in Lb/sq.in. , and vacuum in inches of Hg.

 

Mine sits at 18-20 Hg at idle...u gots a leak.

 

its a leak!

 

Problem fixed!