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Joined: Jun 2007
Posts: 7,099 Likes: 23
Ambassador Field Correspondent Hall of Fame ![](images/stars.gif) Lunker
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Ambassador Field Correspondent Hall of Fame ![](images/stars.gif) Lunker
Joined: Jun 2007
Posts: 7,099 Likes: 23 |
I am assuming that since the dive team plugged the outlet, and a siphon started after plug was pulled, that the diver did not find any inlet blockage??? That leaves only one other possibility....that air is entering the system. I also assume the "90" on the outlet is pointed upward and that there is a constant pool of water in the bend of the elbow that blocks air from entering the outlet down pipe? If so, I would start electrical taping/regluing every joint first before chasing cracks. The vent pipe is what I would inspect first and most closely as people/critters tend to pull on it. Had one pipe I guessed a deer tried jumping over and hit the vent, cracking the PVC and breaking the siphon.
Place something OTHER THAN YOUR HAND, like a strip of thin cardboard, over the vent tube inlet under the water to see if there is a considerably strong vacuum/suction....if not, there is definitely air entering the pipe. (cereal box cardboard will break down quickly once wet so no extra blockage worries)
Last edited by Rainman; 03/18/15 08:56 AM.
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