Radiator Test

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

Remove the engine compartment covers (see ENGINE COMPARTMENT COVER REPLACEMENT )
Wait until the engine is cool, then carefully remove the radiator cap, and fill the radiator with engine coolant to the base of the filler neck
Attach a commercially available pressure tester (A) to the radiator, and apply a pressure of 93-123 kPa (0 95-1 25 kgf/cm² , 14-18 psi)

Fig 1: Attaching Commercially Available Pressure Tester To Radiator
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Inspect for engine coolant leaks and a drop in pressure
Remove the tester, then reinstall the radiator cap
Install the engine compartment covers (see ENGINE COMPARTMENT COVER REPLACEMENT )