I recently purchased the above used O/B motor. It has a water leak coming from somewhere under the motor behind the carb. It appears to be at the very bottom of the motor and olny leaks when it is running. I ran it with ear muffs for about 5 minutes and the discharge water never got hot. I used a mirror trying to locate the source but no luck. Any ideas as to where the water is coming from in that area or what do I need to do to better locate and repair the leak. I'm not much of a mechanic but I will try. Thanks