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purpose of pre-filter fuel pump

Not model or forum specific.

Moderators: DougSea, RobS

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billr
Deckhand
Deckhand
Posts: 9
Joined: Sun Nov 19, 2023 10:29 am
Home Port: pamlico sound

purpose of pre-filter fuel pump

Post by billr »

My boat has something which I feel could be helpful, but not exactly sure how it should be used; you can direct the fuel flow from the fuel tank through a fuel pump before it goes through the fuel filter. The fuel bypasses this pump during normal operations.

fuel tank —> (fuel pump/fuel pump bypass) —> fuel filter —> engine

I was wondering if this could be used during filter changes to prevent issues with air in the lines, and if so what would be the proper procedure? Or is there another use of this pump?

1980 Albin 36

my only previouse relevant boating
experience was getting my private
pilots license 30 years ago
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