Also look closely for leaks at water pump.

Soft Ride has shown you the elbow, which is usually replaced when you do a lower intake job as shown......the end of the black elbow goes into the lower intake the other end into the tensioner assembly......

What usually happens is the the end going into the lower intake breaks off at the orange o-ring......

You are not going to take the lower intake off to do this job.....you will remove the tensioner assembly, and when you do this, I believe there is another elbow at the bottom which you will also replace....

But you should do a coolant pressure test to confirm where the leak is....