plumbed a facet inline pump just pre-filter and wired it through the fuel pump relay. ran it and the crd died after a few minutes. noticed that the plunger on the fuel head was sucked down. any ideas? Its wired correctly (post 5 slot on the relay next to the battery), grounded correctly, and the correct flow direction. Thanks

Disconnect the fuel line from filter and test the pump by allowing it to pump fuel into a cup or bucket.

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U.S. Army Retired