HELP ASAP!! Vaccuum line question
 

Hey Guy,

I have taken my intake off just a few minutes ago to swap injectors. I've marked all the lines save for one. When the intake is mounted on the car, there are three nipples closest to the driver. I've found that all my lines are accounted for except for one. The lowest nipple closest to the driver, where does it connect to, I did find the loose vaccuum line about 10 - 12 inches long.

Thanks

Turbo car? NOn turbo car? Series four? Series five? Third generation? It makes a difference.

On a series four, the bottom vacuum line is the ONLY one that is VACUUM, snd it goes to the water thermo valve to the left of the nipple. About three inches away.

One of the other lines is a bit bigger and feeds the omp spider metered air.

The other line on the back goes to the nipple b/t the oil injectors on the intake manifold and feeds metered air to the fuel injector air bleeds..

ON some series four turbo there is a fouth nipple and it is capped off.

its an s4 turbo II
no omp on the car so I'll just block it off and premix?