Finding pin holes in a closed loop system

[my2rotties]

The pump is cold. I don't know what a strainer is? I am pretty sure there was never one there or Frank would have looked. Feeling like a girlie girl at the moment since I don't know.

Originally Posted by Delphinus

There's also no strainer on the bulkhead - I wonder if something's been pulled into the pipe. Have you checked the line to see if it's clear?

Also, how hot does the pump run?