looks like from rob's site the check valve is directed downward (white side ---> green side) but i've seen fd's with it installed the other way around. which one is the correct direction? i'm redoing my vacuum hoses and that's one i forgot to note direction of..

 

it should point up.. Toward the UIM

 

http://www.davidgeesaman.com/rx7/93v...lor.edited.jpg

 

thanks for the help herb and gees. those vacuum hoses are hard work. thanks for the diagram, i'll keep it for reference.