Inspection After Installation

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

Before starting engine, check the levels of coolant, lubrications, working oils and air conditioner refrigerant. If less than required quantity, fill to the specified level.
Check for any leaks and any loose mechanisms.
Run engine to check for unusual noise and vibration.
Warm up engine thoroughly to make sure there is no leakage of coolant, lubricants, oil, fuel, or exhaust gas.