|Originally posted by RilesOfSmiles:|
So you're saying tge port in the top of the water pump is supposed to have a plug in it?
That is correct.
If you ever buy a replacement pump, it may have the hose fitting there, and you'll need to take the plug out of your old 88 pump and put it in the new pump. The pumps are the same and can be interchanged if you block off the unneeded host fitting.