Engine Coolant: Flushing

Install reservoir tank if removed, and radiator drain plug.
CAUTION: Be sure to clean drain plug and install with new O-ring.

Tightening torque: Refer to "EXPLODED VIEW ".

If water drain plugs on cylinder block are removed, close and tighten them. Refer to "ENGINE STAND SETTING ".
Remove air relief plug (1) on radiator.

Fig 1: Identifying Air Relief Plug On Radiator
Courtesy of NISSAN NORTH AMERICA, INC.
Fill radiator with water until water spills from the air relief holes, then close air relief plugs. Fill radiator and reservoir tank with water and reinstall radiator cap.
Tightening torque: Refer to "EXPLODED VIEW ".
Run the engine and warm it up to normal operating temperature.
Rev the engine two or three times under no-load.
Stop the engine and wait until it cools down.
Drain water from the system. Refer to "DRAINING ".
Repeat steps 1 through 7 until clear water begins to drain from radiator.
Check that the reservoir tank cap is tightened.