M
matt
I'm having a whale of a time figuring out my bilge pump problems. The problem is that it works sporadically; often after I've given it a shake. But I can't count on it. It always cycles, but doesn't always pump water w/enough pressure to discharge it.This weekend I replaced the pump (1100 gph) and the check valve (both the old ones and the new ones worked when not in-system), and checked the line for clogs (none!). So what could it be?I read the Rule pump instructions and that said if the hosing isn't directly vertical it could cause an airlock. I never noticed this problem before, but could that be it? If so, what's an airlock and how do I fix it?Two other facts that could factor in: 1, I've no vented loop, only a loop of the hosing at the discharge port; 2, I had some diesel in the bilge that probably cycled through at some point -- all clean, and new pump and check valve since). Any ideas greatly appreciated. Matt