black tank flush system question...
Hey all... Our new-to-us coach has a black tank flush system... connect a hose in the wet bay & it flushes inside the tank... the problem is, it is plugged... when I hook up the hose (after d...
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If you can get to the spray nozzle, disconnect the hose and see if there is water flow when the hose is attached. If no flow, the vacuum breaker is the problem; if flow the nozzle itself is the issue. My spray head is attached with three screws and silicone sealant. It can be removed and cleaned. I increased the hole size to 1/16". Re-installed with no further problems. JM2ยข...
