Davco 382 / fuel filter not filing up

Discussion in 'Ask An Owner Operator' started by henboy1, Jun 20, 2020.

  1. henboy1

    henboy1 Medium Load Member

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    My fuel filter has about 5000 miles on it . The fuel level in the glass bowl is low for the past 5000 miles , but it is still primed enough to crank . Can a leaking fuel line cause this ? Do I have a bad manufactured filter or did I install it wrong ? I changed the check ball after leaning overnight that caused me to loose prime with a hard start . What do you guys think causes this low fuel filter level that's not going up in the glass ?
     
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  3. henboy1

    henboy1 Medium Load Member

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    Detroit ddec 4 is the engine
     
  4. Doealex

    Doealex Medium Load Member

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    I think you’re making a mountain out of a molehill. If you did install it wrong, you would have issues with running engine by now.
     
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  5. StrokerTSi

    StrokerTSi Medium Load Member

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    When it's full it's time to replace the filter, when its low it's still a clean filter. Davco filter setup is the best out there for this reason imo.
     
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  6. Crude Truckin'

    Crude Truckin' Alien Spacecraft

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  7. Crude Truckin'

    Crude Truckin' Alien Spacecraft

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    When the fuel reaches the top, time to change it.

    And if you're leaning the truck to either side really good with less than say a 1/4 tank, itll transfer to the low side and you'll suck air.
     
  8. whoopNride

    whoopNride Road Train Member

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    Mine is the same way since I changed it about 10 days ago. Mine has never ran that low for very long. Truck is running fine, maybe just getting some clean fuel. The level only goes up as the filter gets dirty/clogged.

    What brand filter? I put a Baldwin on this time, usually use Luberfiner or Donalson.
     
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  9. henboy1

    henboy1 Medium Load Member

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    This is a Detroit filter . At 5000 miles it's usually half way by now . It's still low and I can barely see it . Maybe i am getting better fuel
     
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  10. StrokerTSi

    StrokerTSi Medium Load Member

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    This my experience with the detroit filter as well vs using a Baldwin. Baldwin may filter more microns then detroit, I prefer the detroit filters, they're cheaper for from the dealer and last longer.
     
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  11. nikmirbre

    nikmirbre Road Train Member

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    Ive had this same question with the same engine. Mine does this occasionally when I change the filter and put fuel back in(about an inch up on the glass) It goes down and doesn't come back up for a bit sometimes. It still runs fine and no bubbles that I can see..... Give it some time the fuel level will raise up.
     
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