Our C310 has a 3/4" bilge hose on an electric pump with a check valve and strainer (no idea who installed that or why!!). There's also a 1-1/8" hose with a flapper valve at the inlet going to the Whale manual pump. Recently we spent an afternoon cleaning the bilge, removing all the water, and ended up with a nice, clean, dry bilge. I'm now discovering that the water left in the two hoses is going anoxic/septic and, not surprising, slowly leaking back into the bilge. So now not only does the bilge not stay dry, it stinks worse than before.
My plan now is to remove the check valves and strainer, replace both hoses (nice smooth inside walls), clean the bilge (again), and then manually sponge out the water that drains back from the hoses when we're finished. Assuming that neither pump is needed, that should solve the problem, I think. Does that seem reasonable? Other thoughts?
I know some of you have gone to a larger pump, but I don't see how to get two 1-1/8" hoses (one for the Whale manual and one for a big electric) run, plus two pumps in the bilge; other than mounting a big (diaphram) pump externally and then somehow routing that hose back to the stern.
My plan now is to remove the check valves and strainer, replace both hoses (nice smooth inside walls), clean the bilge (again), and then manually sponge out the water that drains back from the hoses when we're finished. Assuming that neither pump is needed, that should solve the problem, I think. Does that seem reasonable? Other thoughts?
I know some of you have gone to a larger pump, but I don't see how to get two 1-1/8" hoses (one for the Whale manual and one for a big electric) run, plus two pumps in the bilge; other than mounting a big (diaphram) pump externally and then somehow routing that hose back to the stern.