I need some help guys, and forgive my ignorance. I have a 97 Volvo Penta 5.7L GL. I noticed a small drip leak towards the front of the Engine compartment. Just a slow drip. It appears to me that it is coming from the water pump. I have attached a picture. It is not leaking from the 2 hoses(water pump/thermostat) coming into it. In the diagram, the leak is dripping directly underneath the bolt in the picture. I can't tell where it is coming from. Thanks in advance for any advise and how to fix this.