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Join Date: Jul 2006
Location: Kennett Square, PA
That has all the earmarks of a coolant leak, but maybe it's something really simple. For example, there's a coolant pipe that comes out of the front cyl and attaches to a hose that leads to the thermostat (you have the same setup on the rear cyl). I think there are two o-rings on that pipe, and after 20 years, I'm guessing at least one of 'em might have dry-rotted.
I would drain the coolant into some clean, clear container (if it's good coolant, you should be able to pour it back in when you're done; if it's got sludge in it, re-post and we'll put our collective heads together again), and the take on the front cyl pipe and see how the o-rings look. Someone correct me on this, but I believe you can get replacements at a local hardware store- I just don't know the size.