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Old 01-10-2016, 08:36 AM   #1
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Location: Hopewell,IL
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Black tank flusher concern

When I try to use my in coach black tank flusher, all I hear is a thump noise when the water is turned on but nothing happens. Is there something else to do besides attach the water hose to the flush inlet and let it rip? Never had one of these. Still in the learning curve.
Thanks for some replies.
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Old 01-10-2016, 08:46 AM   #2
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Hook up the hose and turn it on. You should here the water spraying inside it. It is more pronounced when you open the flap on the toilet. If you here nothing once the water is running the spray nozzle may have come off inside the tank or os plugged solid with tp. Empty the tank close the valve and pour hot water down with a bottle of vinegar fill the tank with the sprayer and leave it sit for a few hours before dumping again. Also take it for a drive to help slosh the water around in the tank if you can.This may help break up whatever is clogging it if that's the problem.
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Old 01-10-2016, 08:51 AM   #3
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You should hear it spraying if the tank is empty. They often get plugged up by paper. Many have removed them and drilled the tiny holes out a bit.
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Old 01-10-2016, 11:03 AM   #4
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Could also be a broken back flow preventer valve
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