Pelican Parts Forums - I tried the starting fluid test

The 1975 911s that I have been posting about is finally on the road.. My last post was about how it was sputtering in the lowRs and when under a load. The general thought was it had been sitting for a long time . So I tried fresh gas and some fuel additive and drove her for about 2 hours total on 4 trips.. Sputtering has gotten worse. Now I tried spraying starting fluid in the engine compartment near where the rubber cover goes over those throttle body looking things.. The idol DID change. So I looked until I found a vac line that didn't have a home on one end. The line comes out of the very top of a thing that looks like the fuel filter but smaller . It has several other lines coming out of it one actually does go to the fuel filter others go to different parts of the fuel distribution points. I need to know where to plug that line in and hope like hell it fixes the rough running and sputtering.http://forums.pelicanparts.com/uploa...1756415049.jpg