Hey guys, i'm wondering where on your intake manifold do you install the T for a vacuum gauge. I have it installed in a hose coming from the top of the intake manifold. The reason I ask this question, is because my vacuum's reading low. It's only at 10 In-HG. I'm wondering if I need a new line or T to install.

Thanks,
-Freddy

 

There should be two vacuum nipples right behind the throttle body on the intake manifold. I'd put the T there.

 

is one of the nipples right at the top behind the throttle body?

 

it can read down to -15 to -20 at idle, so if your seeing -10 theres a vacuum leak first of all. i use the vacuum from the fuel pressure regulator you can t off from there.

 

i'm running mine from the pcv valve, maybe it needs a bit of cleaning.

 

ok, i just relocated it to the vacuum line on my fpr, and it's reading at -20.

Thanks,
-Freddy