alldata doesn't provide very good information on this subject.

All the lines to my pump will hold a vacuum except for the Yellow/green IZV line. I'm assuming this line has a leak, what do you think?

Also does any one know the ending location for this line?

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1999 SL500
2003 C32
2002 S55
2004 S430
2003 E320
2004 E500