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Old 12-29-2018, 02:55 PM   #15
Ski in NC
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City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 5,079
Put impeller in and install cover plate. Take a hose and blow into pump outlet (top). If you can blow through pump, pump body is either worn or impeller is wrong.

I have run into impellers that were like 1/32" shorter than they should be. Same thing, would not prime. I think they too were NOS and the rubber shrunk. Get some calipers and measure axial length.

Could he have removed the pump and installed it upside down?
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