Hi and thanks for using 2CarPros.com.
That could be a few things. First, if I had to take a guess, it sounds like it could be a heater hose. However, you really need to pressurize the system and then you will be able to locate the leak. Here is a link that discusses how to find and repair different types of coolant leaks:
See if that helps and let me know. If you find the leak or not and need additional help, let me know.
Sunday, September 23rd, 2018 AT 8:39 PM