[sundogcwolfe]

What should attach to the spill last spill return port (closest to the firewall) on 300tdi?
Thank you

 

[Red90]

There should be no open fitting there. It seems the newer spill rail supplier have become lazy and used common fittings. Either add a plug or close it off by flattening and soldering.

 

[sundogcwolfe]

Thank you. Will close off.