What is this vacuum port to?

[94e34m60]

Located on the rear "plate" of this intake manifold, what are these two ports for and where do they connect to? The car is a '94 530i V8 with automatic transmission and ASC.

[Tiger]

Supposed to be a rubber plug on it.

[94e34m60]

Both the large port and the small port are supposed to be plugged?

[Tiger]

Large one is plugged. The small one is supposed to connect to the fuel pressure regulator.

[94e34m60]

There is a small one on the opposite side that is currently connected to the fuel pressure regulator. The purple circled port is a small one directly above the big port, both of these are on the "driver's" side.

[Tiger]

Mmm... I don't recall another one there on my 540 and I just recently changed it. If you don't have any hoses nearby those vacuum ports... then it is most likely just plugged up. You can consult with your BMW dealer on this.

[94e34m60]

Okay thank you! Was just looking for vacuum leaks. A can of brake cleaner has confirmed that......the complete intake manifold gasket set needs replaced. To bad I am over 2,900 miles from my home and all of my tools, joe blow's down the street is saying $600 total for intake gasket job and driveshaft flexjoint & center support.

[632 Regal]

Reset the computer and drive it home. I cant see an intake leak on these things getting real bad in a short time. 600 bux for all 3 isn't that bad IF they do it proper, and that is a capital 'IF'

[Tiger]

Agreed...

You can try tightening the intake down a bit more... DO NOT CRANK ON IT... MEANING DO NOT TORQUE THEM DOWN TIGHT. Put your hand on the ratchet head... not the handle... if you can't turn it any more, that is it.

$600 is not bad of a price... but I don't know anyone who does the work that cheap... I wonder if he is just going to tighten them down a bit more and call it fixed... I personally have done the intake gasket... there is quite a bit to remove to get it out.

[94e34m60]

Agreed...

You can try tightening the intake down a bit more... DO NOT CRANK ON IT... MEANING DO NOT TORQUE THEM DOWN TIGHT. Put your hand on the ratchet head... not the handle... if you can't turn it any more, that is it.

$600 is not bad of a price... but I don't know anyone who does the work that cheap... I wonder if he is just going to tighten them down a bit more and call it fixed... I personally have done the intake gasket... there is quite a bit to remove to get it out.

I have tried to tighten it down but it didn't help, didn't make it worse either. I noticed the previous "owner" of this vehicle must have had the gaskets done before, because there is blue gasket goop protruding from around the valley pan.

Joe Blow's down the street is now saying $1,058.00 for intake & valley pan, and the driveshaft issues....gotta love over the phone estimates and in person estimates :/ Probably going to try and trade it in for a 2008+ VW later on today/this week.