Pre Filter for an Added Electric Fuel Pump - Ford Powerstroke Diesel Forum
 
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post #1 of 9 Old 02-02-2013, 10:04 AM Thread Starter
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Pre Filter for an Added Electric Fuel Pump

Greetings,
I'm the proud owner of a new to me 1996 7.3 w/ 108k mi.
I wish to add an electric fuel pump, that will only be used at starting, and if needed, to purge air in the lines.
I am now told that a fuel filter needs to be added to protect the pump.
My question is:
Will a 2 micron filter be too much of a restriction for the mechanical lift pump?
or should I go with a 10 or 30 micron filter?
Thanks in advance for any help you may wish to offer.
Dick
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post #2 of 9 Old 02-02-2013, 10:08 AM
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Why not clean up the engine valley and just go with a straight e fuel system?

Chad

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post #3 of 9 Old 02-02-2013, 10:14 AM
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30 pre 2 post

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post #4 of 9 Old 02-02-2013, 04:56 PM Thread Starter
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Quote:
Originally Posted by creekfreak View Post
Why not clean up the engine valley and just go with a straight e fuel system?
Hi Chad,
Thanks for the reply.
Help me out here, what does "clean up the engine valley" mean?
Thanks in advance,
Dick
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post #5 of 9 Old 02-02-2013, 05:22 PM
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Search e fuel in this forum. Basically you delete the fuel bowl and mechanical pump from the engine valley and replace it with an e fuel system. Just do that rather then having it (electric fuel pump) as an auxiliary. In which case you'd use a 25-30micron filter/water separator first, then a 2 micron filter.

Chad

95 ECLB 4x4
Rebuilt e4od
320k kilometers (Canadian truck)
BHAF DIY mod
Cat/muffler delete
Diamond Eye 3" downpipe
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Running Goodyear Dura-tracks on stock rims.

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post #6 of 9 Old 02-03-2013, 03:14 AM Thread Starter
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Quote:
Originally Posted by creekfreak View Post
Search e fuel in this forum. Basically you delete the fuel bowl and mechanical pump from the engine valley and replace it with an e fuel system. Just do that rather then having it (electric fuel pump) as an auxiliary. In which case you'd use a 25-30micron filter/water separator first, then a 2 micron filter.
Sincere thanks,
Dick
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post #7 of 9 Old 02-03-2013, 01:46 PM
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Cheap E-Fuel Conversion! For $200 or less!! Write Up

There is 100's of build threads and depending on what you're going for there's 100's of options. This is one simple example. You can order a complete kit also if that's your cup o tea.
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post #8 of 9 Old 02-03-2013, 04:14 PM
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Re: Pre Filter for an Added Electric Fuel Pump

Quote:
Originally Posted by tartansailor View Post
Greetings,
I'm the proud owner of a new to me 1996 7.3 w/ 108k mi.
I wish to add an electric fuel pump, that will only be used at starting, and if needed, to purge air in the lines.
I am now told that a fuel filter needs to be added to protect the pump.
My question is:
Will a 2 micron filter be too much of a restriction for the mechanical lift pump?
or should I go with a 10 or 30 micron filter?
Thanks in advance for any help you may wish to offer.
Dick
First before you do any sort of modding to your truck you need to educate yourself a little more on your truck.

Your current fuel system is a mechanical regulated return pressurized system and does not require any type of purging or pre-pressurizing.

Read, read, research, read, and then read some more. As previously stated if you are going to mod the fuel system then you will want to go with a complete e-fuel upgrade.


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post #9 of 9 Old 02-05-2013, 12:17 PM
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I like the idea of extra filtration to ward off the evils of getting a bad load of diesel while towing on the road.

As a result, on the frame rail just past the fuel selector valve I installed into the fuel line a suction-side 10 micron water/fuel separator, a Kennedy electric lift pump which adds about 4 psi to the fuel line, and a 3 micron Donaldson water/fuel separator with a sight glass. The clean and dewatered fuel is then sent to the engine's mechanical fuel pump and its factory filter.

Redundancy can be your friend when it comes to clean fuel.

Many folks with the Dodge diesels are adding mechanical belt-driven fuel pumps because of the problems they're having with factory electric fuel pumps. I figured I'd just keep my factory mechanical pump and add an electric lift pump to aid it get fuel through the two filters I added.

The Kennedy electric pump I installed allows full fuel flow to be pulled through the two added filters by the mechanical pump in case the electric pump should fail. I've tested this by cuttng off the 12v feed to the electric pump and observing no decrease in normal fuel flow or fuel pressure. Some electric pumps do not have this ability.
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