Toss stock fuel filter??
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Senior User
Joined: Dec 2004
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From: Franklinton, NC
Toss stock fuel filter??
Just finished putting two new tires on wife's car and oil change, new chain/sprockets and shocks on the motorcycle, four new tires on truck, new front brake pads, changed coolant filter, oil & oil by-pass filters, trans filter and filter that came with my Harpoon/Hutch mod and since I'm now broke *grin* I have a question about the stock fuel filter.
Since I have the (huge/long) fuel filter/water seperator under the truck that I put in when I did the Hutch/Harpoon mod, do I really need the stock fuel filter on top of the engine? If not, would there be any advantage in just putting the stock filter cap on without a filter in the bowl? CAN you put the stock cap on without a filter and expect it to not leak?
Inquiring (and broke) minds want to know!
Thanks, CedricR.
Since I have the (huge/long) fuel filter/water seperator under the truck that I put in when I did the Hutch/Harpoon mod, do I really need the stock fuel filter on top of the engine? If not, would there be any advantage in just putting the stock filter cap on without a filter in the bowl? CAN you put the stock cap on without a filter and expect it to not leak?
Inquiring (and broke) minds want to know!
Thanks, CedricR.
Fleet Mechanic
Joined: Jun 2009
Posts: 1,866
Likes: 8
From: Fleetwood, PA
im not to sure, but i would think the filter that you put in instead of the tank screens is replacing the tank screens not the fuel filter under the hood. i mean for the 15 bucks or so it costs for a fuel filter i would just keep it there.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
If the aux fuel filter is a water separator and the filter is rated at the same micron size you do not need the stock filter.
BUT, there is a valve at the bottom of the stem that the opening in the center of the filter fits around. Without the fuel bowl cap pushing down on the filter the valve will not open and there will be no fuel supply to the heads. It is to prevent the engine from running without a filter in the fuel bowl. That valve can be removed after removing the stem. I saw a write-up or video on it but can't find it.
BUT, there is a valve at the bottom of the stem that the opening in the center of the filter fits around. Without the fuel bowl cap pushing down on the filter the valve will not open and there will be no fuel supply to the heads. It is to prevent the engine from running without a filter in the fuel bowl. That valve can be removed after removing the stem. I saw a write-up or video on it but can't find it.
Cargo Master
Joined: Apr 2007
Posts: 2,333
Likes: 1
From: St. Louis, Mo.
I think if your filter under the truck is pre fuel pump, if pump craps out u will not have any fitration between pump & engine. If filter under truck is after the fuel pump u are probably ok to remove it.
More Turbo
Joined: Aug 2008
Posts: 593
Likes: 1
From: Frankfort, KY
I put in one of those sight glass filters after the pump to stop anything that the pump might spit out.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
I would leave the factory filter installed as a final defence.
NEVER run without a fuel filter between the pump and the injectors.
That pump outputs brush material, and very fine metal pieces over time.
Where is all this worn off metal going to go if the filter doesn't stop it?
And the same question for the brush material. Where is it going to end up if the filter doesn't stop it?
NEVER run without a fuel filter between the pump and the injectors.
That pump outputs brush material, and very fine metal pieces over time.
Where is all this worn off metal going to go if the filter doesn't stop it?
And the same question for the brush material. Where is it going to end up if the filter doesn't stop it?
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Postmaster
Joined: Jan 2009
Posts: 2,544
Likes: 4
From: Suffolk, VA
Yes, that'll work too. But I don't think the OP was interested at this point in doing the bowl delete and a RR. And even then I don't think those sight glass filters do all that great job of filtering small particles.
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Post Fiend
Joined: Feb 2007
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From: Dallas-Ft. Worth
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Senior User
Joined: Dec 2004
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From: Franklinton, NC
As usual, there is a wealth of knowledge here at FTE!
I am running the stock pump (not even sure I remember where it is!) so I'll leave the stock filter in place even though the aux filter is a paper media filter and has three times the filter area as the stock filter. The stock filter did look blacker than the aux filter.
Crap in the injectors.... make yer skin crawl, doesn't it?
Thanks guys, CedricR.
I am running the stock pump (not even sure I remember where it is!) so I'll leave the stock filter in place even though the aux filter is a paper media filter and has three times the filter area as the stock filter. The stock filter did look blacker than the aux filter.
Crap in the injectors.... make yer skin crawl, doesn't it?
Thanks guys, CedricR.
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
if you do remove the bowl and filter you must replace it with a 2 micron filter after the pump..for me the filter cost alone is 8 bucks now...here is a NAPA ## if you chose to go that rout
filter base napa #4770
2 micron NAPA Wix filter 3528
filter base napa #4770
2 micron NAPA Wix filter 3528
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