Hi there. I had the same issue with coolant leaking from top from the alternator and near a blind threaded hole . The problem was the water pump.
I replace it following the service manual procedure . 5hrs to complete the job.
235,000 miles last the old pump . I replace the pump with nissan original part.
Last edited by wilfredo velazquez; 02-15-2013 at 05:28 PM.
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