Nissan Repair: radiator overheating, nissan quest, petcock

Question
I have a 1999 Nissan Quest. My car began overheating.I think there is air in the system how do I drain it.

Answer
Hi Mark -

There should be a drain petcock at the bottom of the radiator.

Also check the following:

Thermostat
Cooling fan - most likely the motor or temp switch

If you need assistance in diagnosis. let me know

Hope this helps
aloha
calvin