2000 Lincoln LS

Engine Mechanical problem
2000 Lincoln LS V8 Two Wheel Drive 185000 miles

I drove my car today and it was fine. Later when we tried to start it, there was an awful sound that sort of sounded like when someone tries to start a car that is already running. I turned off the key and then tried again and it makes a click but nothing else. We left in another car and came home to find it leaking coolant from around the middle of the car from the driver's side manifold pipe. I don't see it leaking anywhere else. Why would my car not start now?
November 9, 2009.

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