Inspection After Removal

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Check valve seating condition at ordinary room temperatures. It should seat tightly.
Check valve opening temperature and maximum valve lift.

Fig 1: Thermostat Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Testing Thermostat
Courtesy of NISSAN MOTOR CO., U.S.A.