trying to find a mysterious coolant leak, could it be a water pump going bad?

[Austin Calise]

I recently found my mysterious coolant leak while poking around under the car after my clutch pedal failure. Turned out to be the heater valve. Like others have said the turbo coolant return line has a piece of rubber hose to the banjo on the h20 manifold that dries out and cracks thus leaking. h20 pump O-ring can leak too I always make sure to grease the o-ring when installing it to ensure long life.
     
                    HTH's Austin

       
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