Here is the way I understand the fuel bowl and delivery system.


Changing the spring will raise overall F.P.

If I am reading from post fuel filter side, which I am, then my gauge is showing what the injectors see for F.P.

So in reality the only 2 things that can effect the FP from 1 week ago would either be the standpipe or the filter.

My standpipe is not gutted but I will have a good look at it to make sure everything is lined up when I replace the suspect fuel filter.

 

From what I’ve seen recently online, a NAPA is no longer always made by WIX. They have multiple companies making their filters with distribution based on location.

Depends who’s side of the story you’re hearing as to why the change. It seems NAPA claims WIX production volume couldn’t keep up with demand but WIX denies that.

Take what I say lightly though and do your own digging for this topic. I ran across it on a “Royalty Auto” (I think it is) video and started looking into it a bit. For most things I use WIX branded filters from a parts store so it was just casual investigation for me.

I only mention this because the NAPA filter installed may not be the same part as FTN was recommending.

I was also thinking a possible stand pipe issue.

I don’t see how the FPR could have changed anything since it isn’t touched during a filter swap. Unless there is some possibility of the return line getting moved around while doing the job maybe.

 

We just got a FF from NAPA and it would only go down the stand pipe 2/3 way. Took it back and exchanged it. The new one was good to go. Showed the guy in the parking lot and he couldn’t believe it.

 

This right here might be your cause.

As Tpayne621 mentioned, you can simply remove the guts from the standpipe and go on about your day. I did this many years ago after seeing an FTE'r that is no longer active here struggle with a truck that would only hold enough fuel pressure to idle.

Bill Hewitt (RIP) from Power Stroke Help is known for his crazy ideas and antics. He made the video below that describes the process of removing the standpipe guts starting at time stamp 3:20.

 

Or just use the OEM Racor unit. On a 15-20k maintenance interval we're talking nothing money.

 

I do too as well as NAPA Gold, which I believe is made by Wix.

 

I had a discussion with the NAPA manager at one store, and he said the same thing.
all of the NAPA branded filters are now made by WIX

 

Guys, I don’t think this is true any more. I believe SOME but not all of the NAPA filters are made by WIX.


https://www.redpowermagazine.com/for...e-now-baldwin/

https://www.forbbodiesonly.com/mopar...erated.273752/

https://rennlist.com/forums/996-foru...2-filters.html

 

after listening to the whole video, and then subscribing so I could see another video,
I just do NOT trust that guy for the FACTS....

he could not even adequately describe what the issues were with the car that came in a few days ago....

Rainman Ray beats the hell out Stephen for presenting the FACTs, and showing exactly why you should, or should NOT do something...

this is Ray's latest video, the car lift cable snapped and he shows what happened.
he has extremely detailed videos on how he diagnoses vehicles and the repairs that are done.

 

I used to be a fan of Napa filters. I hear they are no longer made by Wix, but rather whoever is the cheapest per run.

I plan to stick with Cat, Baldwin, or Donaldson filters, or Wix directly.

 

you mean O'Reilly filters are better ???

I always bought Wix when I could

 

OEM style Racor filters can be bough from RiffRaff for $27. Cheapest on O Reillys is $28. Yes, there’s shipping but if you’re getting 2 or 3 at a time the shipping is pretty moot.

The only expedition may be from the US to Canada.

 

I have only used fuel filters manufactured by Racor, the OEM designer and manufacturer of the OEM fuel bowl and filtration system for the 7.3L Power Stroke, both in the 1999-2003 as well as the 1994-1997 genres.

Racor manufactured the Motorcraft branded fuel filter and Racor's own "ParFit" brand fuel filter on the same manufacturing line.

The ParFit version is shrink wrapped with the replacement O-ring kit, while the Motorcraft was boxed, in a box size large enough to not permanently distort the largest O-ring in the O-ring kit bag included with the filter.

The O-ring taking a set is the principle problem with the ParFit shrink wrapped packaging. If one buys a case of a dozen or two dozen ParFit fuel filters, by the time the second or third filter is used, all the O-Ring bags that are shrink wrapped to the remaining filters in the case have been in that distorted position for so long, the O-rings no longer lay flat on the land surrounding the fuel bowl, and when the cap is tightened, invariably the circumferential seal is compromised, which causes people to think that the fuel filter is crap, or the separate OEM cap is crap.

Folks who only bought Motorcraft branded filters didn't have this problem, because the extra cost to package the filter in a box large enough to accommodate the O-ring bag in a relaxed state prevented the O-rings from taking a set in a distorted pretzel after the package was exposed to heat cycling during distribution storage, wholesale delivery, parts house storage, and finally, storage in a garage or shed.

Members of the 7.3L community found a work around to the O-ring issue, by scouring the McMaster Carr catalog of O-rings, where a four lobe cross-section O ring was found to replace Racor's bevel cut gasket. Members who have purchased these Orings have reported problem free results, enjoying the peace of mind that comes with having a confidently sealing fuel bowl lid.

I keep meaning to order a dozen of those 4 lobe cross-section O rings, but I keep forgetting the part number to them. I keep relearning the part number and writing it down on a post it note, and then keep losing the post it note.

But I will not switch to an aftermarket fuel filter, as I don't want to give up the two stage filtration of the Racor filter, which has a water block screen as the first stage.

 

Today on my way home from work I stopped in at the local Ford dealership.

Almost choked when he quoted me the price for the filter but I bucked up the $138.21 after tax dollars.





It gets installed tomorrow afternoon once I get back from exchanging the rear tires I had installed 4 weeks ago that weren’t up to the task I asked of them.

 

FIFY