True Grade fuel pump
Cargo Master
Joined: Sep 2012
Posts: 2,112
Likes: 286
From: Eastern TN
If inlet and outlet are marked, hook it up to a battery to see which way it moves more volume. It might be a style of pump that’s polarity agnostic but I can’t picture it in my mind. I don’t expect pumping water for a couple of seconds will harm the pump. Maybe try Diesel or light oil. Quickie electrical connections and gasoline vapors aren’t a good idea.
Sixto
07 E350 5.4 195K miles
Sixto
07 E350 5.4 195K miles
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