
Hi
I have a sard fuel pressure regulator mounted. but were do I connect the vacuum (?) top union to ??

From the image; I would suggest the elbow on the top is the vacuum connection....
...but; don't you have any instructions for the item? Have you searched on t'internet for some downloadable instructions/plumbing diagrams?
Agreed, Small one on the top is the vac port.
Steve,
Does this pic help?
http://kruger.fotopic.net/p26415055.html
http://reviews.ebay.co.uk/Sard-Fuel-Pressure-Regulators_W0QQugidZ10000000004044257?ssPageName=BUYGD:CAT:-1:SEARCH:2
[Edited on 8/10/07 by DarrenW]
thanx guys ! so i can connect it to my airbox somewhere ?
You can connect to anywhere that has a vacuum takeoff. It just increases the fuel pressure when the vacuum level changes.
thanks again