New owner, 12,800 miles '91 (long)

[ram_g]

Thank you all for the welcome and suggestions!

As stated in my post, my weeping coolant issue seems to have slowed but not stopped with my installation of a missing plenum bolt and torquing the others to spec. It appears that a good long term fix would be to delete the TB coolant hoses and internally plug the coolant passage(s) from the IH(s) up to the plenum, but I'm going to wait a while to gather more experience with the car to assess just how bad this coolant leak continues to be, as well as what else I might want to do when the plenum gets pulled (whether by myself or the recommended Steve @ CFP). (As of now, I'm still waiting for the tires before properly exercising the car.)

One little interesting detail - it appears that someone in the past replaced the L tube on the driver side of the plenum with a T (like on the passenger side) and then blocked one leg of the T. Just looking at it, it does not seem to be a recent "fix". From my understanding of the history of the car, I wouldn't be surprised if this was done at a dealer service dept.