A coolant leak can develop from the front of the cylinder head that can appear to be a head gasket leak. There is a threaded plug just below the camshaft that may leak if there is corrosion present on the threads. Cleaning any residue, re-installing the plug with pipe thread (Teflon) tape, and torquing the plug to the specification typically repairs the leak.
Head gasket leak may actually be coolant leak on Nissan Maxima
Average mileage: (–)
Engine affected: 3.0L V6 SOHC
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