Gerry, try removing the 'fan' belt and rocking the water pump pulley. It shouldn't! Any slop, and any roughness when rotated, is a bad sign. Replace it asap to avoid converting your waterboxer into a waterboiler and cooking the headgaskets. The motor needs to be hot and spinning rapidly to generate much water pressure, so it likely doesn't drip when off/cold yet. A radiator pressure test might push some water past the seals however. Joels indicators were spot on, look for the dried anti-freeze residue, it doesn't sound like valves (yet? just kidding). My '85 has been well behaved in that dept. so far, 102K miles. bye, Tim S.
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