Workhorse Fuel Filter Adapter

[oemtech]

Well folks it was bound to happen..... Workhorse has ceased production of the 3 port filter. I got the last 14 known to exist.



Needles to say I was very surprised when I found out they highjacked Jack Ashenbach's (Huskyjack) design and OEM-Engiuneering kit concept to call it their own.

HuskyJack's Design



OEM_Engineering's Design



Workhorse Design




The Workhorse part number is WHG481FK.... It will be sold with the adapter and a GF481/652 filter.

[CoastieSCPO]

Aye matey, I smell pirates I tell ya! I'm glad I bought one from Glenn recently. Good man out there in the Lone Star State.

Bob

[max49]

That's amazing. All this time they've been trying to sell their weird brainstorm filter, and now apparently they are realizing they can't keep a company making that filter. You guys should have put a patent on your adapter.
How much is WH getting for the adapter/ filter kit? Remember when you guys first made the adapter? Some thought it was doomsday, LOL

[oemtech]

Remember, "Any modification to the fuel system will void your warranty".

Also, IIRC someone on this forum spoke about having an extra fitting, R&D Costs, CARB/EPA approvals etc. None of that seems to be relevant now.

[Arch Hoagland]

Just had mine replaced last week in Fresno, CA The shop that did the work said they were very hard to get and I got the last one he had in stock. Now I know why they are hard to get.
I got my old one back (original since new) and blew through it, expecting it to be hard to blow through. Not so. It was blocked a bit but not much. I'm used to a clogged filter being very hard to blow through.
I'm at 60,000 miles and experienced extreme loss of power climbing a very steep grade (Pacheco Pass in California) that cleared up as soon as I was done climbing. Fine for another 1,000 miles of kinda level driving. I won't be able to hit that Pass for another month to see if the filter cured the problem.
Starting to wonder if it could be the fuel pump.

Total cost was $111 installed.

[DriVer]

Quote:

Originally Posted by Arch Hoagland Starting to wonder if it could be the fuel pump.

Arch, I was expereincing flameouts and hard starts (no mountains) and what it turned out to be was bad fuel pump. S'working good now.

[Clay L]

I bet the guy selling adapters at the Quartzsite RV show sells a bunch of them next January!!

[iRV4FUN]

Do fuel filters time out? My P32 is eight years old with low milage. Can't see changing a fuel line filter unless it simply times out.

[DriVer]

Quote:

Originally Posted by iRV4FUN Do fuel filters time out? My P32 is eight years old with low mileage. Can't see changing a fuel line filter unless it simply times out.

A fuel filter does not time out. That said if your filter is that old, I would change it every 3 years unless it get plugged by a bad load of gas. It does not cost that much to change the filter vs the benefit.

Some owners will change their filter more frequently and that's OK too. There really isn't a hard maintenance recommendation on the fuel filter.

[pkmesser]

Does running a dirty fuel filter cause quicker fuel pump failures? I used chevy pickups, with a lot of milage every year, in very dusty conditions, and had pump failures every 80-100 k miles. I then started having the fuel filters changed every service, and seemed to do better on fuel pumps, any thoughts here?

[oemtech]

Quote:

Originally Posted by pkmesser Does running a dirty fuel filter cause quicker fuel pump failures? I used chevy pickups, with a lot of milage every year, in very dusty conditions, and had pump failures every 80-100 k miles. I then started having the fuel filters changed every service, and seemed to do better on fuel pumps, any thoughts here?

Logic says yes... Also remember that the return line is now only about 6' to 8' long versus 35' plus. So, when the fuel reail hits 50-60 psi the fuel is returning to the tank (pump runs 90 psi). In other words you are returning fuel to the tank at about 3x rate compared to the old system. This means a bad load of gas is going clog the filter much quicker. That's why I change mine every year.

[DriVer]

Quote:

Originally Posted by oemtech Logic says yes... In other words you are returning fuel to the tank at about 3x rate compared to the old system.

If I might be allowed the liberty to play devil's advocate.... My fuel pump is the same as a 2004 and newer pump, the delivery rate is the same. A Workhorse fuel pump is always ON so at 90 psi the fuel needs to go somewhere. The returnless system is a good one I believe because the fuel doesn't have to travel up to the rail and back since it's in a short loop. The return line on the 01-03 pumps push just as much fuel back to the tank as an 04 and newer setup. It would have to. I am not on-board with the 3X factor you stated otherwise, would we not see a filter with increased media size? My filter is the same size as 2004 or later.

I expect that if the fuel is coming back into the tank at "x"psi regardless if the loop is short or long the same amount of fuel is going to be flowing back into the tank. If you were to setup an experiment, use a second fuel tank as a source and use a returnless system and then a conventional system and push the fuel back into the target tank. My logic tells me that the source tank will drain and the target tank will fill at the same rate. If that's even close to being true, the 3X factor surely is changeable.

Continuing .....

Quote:

This means a bad load of gas is going clog the filter much quicker. That's why I change mine every year.

I agree 100% with this strategy. It's all up to the individual and frequent changes is a good thing and it's not a waste of money.

Just one caveat, although gasoline is pretty clean stuff one snootful of garbage will plug up a filter very quickly. In this case you would have to change the filter immediately. Both Oemy and I have seen this happen in our travels.

[pkmesser]

I presume the pressure regulator in the system is in the return loop. Otherwise they system plain would not work. So, if 90 psi is established by a pressure regulator in the return loop, the pump would be operateing at a higher pressure, (90+line losses+filter losses). This being the case, a filter plugging would cause the pump to operate at a higher pressure, up to it's head capacity. That could then lead to shorter life. Am I missing something here?

[George Z]

Just ordered a fuel filter adapter kit from Glenn at OEM engineering for my 2006. Pleasant conversation with Glenn and a very prompt and efficient ordering process. Nice to deal with people who know their product.

George