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Old 05-11-2008
minggat minggat is offline
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The spurts and sputters indicate that you are sucking air, which means a leak in the suction side of your system, not the pressure side. I am not saying the problem is not in the pump, but you are introducing air to the system. You don't say if you have a diaphram pump or a vane pump. I can see the problem might well be in a diaphram pump. But a hole in the diaphram that can suck air would also spurt out air or water in the pressure stroke.
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