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post #8 of Old 08-16-2014
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Re: Marine head won't pump

I've had the opposite problem with my PHII. The intake will often run dry. If I "seed" it with a bit of fresh water, it then pumps fine for the duration of that particular flush. Then, same problem later ... but not always. I checked the intake and doesn't seem to be clogged. I wonder if the O-ring around the piston in the pump needs to be replaced -- perhaps the seal is gone. Sorry, didn't mean to hijack the thread, but my question seemed substantially similar.
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