G35x Sedan AWD V6-3.5L (VQ35HR) (2007)
Radiator Cap: Testing and Inspection
RADIATOR CAP
RADIATOR CAP: Inspection
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Check valve seat of radiator cap.
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Check if valve seat is swollen to the extent that the edge of the plunger cannot be seen when watching it vertically from the top.
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Check if valve seat has no soil and damage.
A: Valve seat
B: Metal plunger
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Pull negative-pressure valve to open it, and make sure that it close completely when released.
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Make sure that there is no dirt or damage on the valve seat of radiator cap negative-pressure valve.
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Make sure that there are no unusualness in the opening and closing conditions of negative-pressure valve.
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Check radiator cap relief pressure.
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When connecting radiator cap to the radiator cap tester and the radiator cap tester adapter (commercial service tool) (A), apply engine coolant to
the cap seal surface.
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Replace radiator cap if there is an unusualness related to the above three.
CAUTION: When installing radiator cap, thoroughly wipe out the water outlet (front) filler neck to remove any waxy residue or foreign
material.