92 Eclipse 2.0 Non Turbo, Vacuum Help
 

I can't find where the Vacuum line that comes from the drivers side of the fuel rail goes ? There is a 1/2" return line and a 1/4" vacuum line about 8" long and I can't find where it goes, The car runs great for a while (about 25 min. ) then the check engine light flashes and it cuts out the takes back off. I can't read a code because it never stay on long enough