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V7 fuel filter WARNING!

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I finally got around to changing my fuel filter out for one of the all metal variety a couple weeks ago with about 10,000 miles on the clock, and just got to take it on its first decent ride since the filter swap of about 130 miles round trip. When I first changed it out and fired it up, I thought the bike was running smoother with the new filter, but I assumed that this was more psychological than real. I fueled up on the way out for my recent trip, and then again when I returned, and as is my habit I calculated my gas mileage. I have always been a bit disappointed in the mileage that I got on the V7. I usually get around 42 mpg on mostly highway trips and 39 or 40 with more time on city roads. On this trip though, I got 47 mpg. Could the new filter have smoothed out the V7 AND improved its gas mileage? Or am I imagining the smoothness; and is the mileage a fluke? Admittedly, this is just one trip, and lots of things can affect mileage. Perhaps there is something that I am not accounting for.

Curious if anybody else has had similar experiences.
 
My dealer friend just had to retrieve a new V7 III 200 miles out from the shop as the bike quit on the customer as he was riding the bike home.
Upon inspection it was discovered that the two part fuel filter had separated stopping flow and all further forward motion.
This will be remedied with a all metal replacement.
 
I contacted Mahle customer services in the UK about this. They told me that filter was designed to work only with diesel fuel. They did send me two KL145 all metal filters though.
 
King of Fleece said:
Funny. They told me it was designed for non-ethanol gasoline only.
Click to expand...

Both you and Brian would be correct as diesel does not have ethanol added in there but rather sulfur.

I have been delaying my inevitable of filter splitting by using ethanol free gas up in Canada as much as possible...althought I don't think US has this option and yet I believe I read somewhere they are actually going to increase ethanol contents from another article.

Gotta get to me as I already purchased the filter...just been riding too much :p
 
I will stubbornly maintain that I still believe the ones the fail will do so quickly (like new bike stranded in 200 miles) and that otherwise they'll likely last as well as anything.

This is based on the extremely low number of reports of failures coupled with destructive analysis of some old ones.

My last one was 3-4 years old when it maintained integrity with more than 100 psi (maybe it was 120 I forget), meaning 3-4x more then the operating pressures of the fuel system.

Change em if you want to, but if you get past the warranty you're probably fine indefinitely.
 
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Timmy the Hog, yes we do have ethanol free gas, at least here in Oregon. 92 octane. Mainly independent stations.
 
Failure at 1200 mile after 2 weeks ownership here on my V 7 III. Just replace the damn thing and be done with it, jeezzzzz. It's a cheap and easy solution to a potential problem that could leave you stranded at roadside. If you enjoy that kind of adventure, well, just ride on.

Paul
 
JACoH said:
Timmy the Hog, yes we do have ethanol free gas, at least here in Oregon. 92 octane. Mainly independent stations.
Click to expand...

ah...good to know...maybe just the stations that I visited didn't have them...

mostly the Washington states stations I have visited...
 
I was concerned about the fuel filter on my 2016 V7II Stone so I decided to change it. I have a station that sell E0 premium that is three miles from my house so that is what I normally use, but when traveling I use tier one fuel that usually is E10.

The filter was a steel/plastic combo and the plastic was brown and swollen but not cracked or leaking.
P1000433-L.jpg


As I was swapping out the filter I noticed this:
P1000434a-L.jpg


What is it? I found no reference to in the parts or service manuals, and no hoses in the tank to connect to it.
A guess is that it is a check/pressure relief valve for the return line from the fuel injectors, a feature not found on V7IIs.
Anybody know what it is?
 
As we told you on WG, that's the fuel pressure regulator. It's typically a diaphragm and spring loaded device that controls the opening of a pressure bleed off valve.

The valve opening bleeds off excess fuel pressure so the high pressure circuit maintains a constant expected operating pressure (which is how the ECM can precisely meter fuel with injector dwell time).

The pressure regulator bleeds this pressure with spray directly back into the tank.
 
Kev M said:
As we told you on WG, that's the fuel pressure regulator. It's typically a diaphragm and spring loaded device that controls the opening of a pressure bleed off valve.

The valve opening bleeds off excess fuel pressure so the high pressure circuit maintains a constant expected operating pressure (which is how the ECM can precisely meter fuel with injector dwell time).

The pressure regulator bleeds this pressure with spray directly back into the tank.
Click to expand...
That's what I thought. But why is it there? It is not connected to anything - I looked for a tube inside the tank.
 
RedHawk47 said:
That's what I thought. But why is it there? It is not connected to anything - I looked for a tube inside the tank.
Click to expand...

It is connected, under the mount, probably in a passage that's part of the flange judging from those photos.
 
RedHawk47 said:
I was concerned about the fuel filter on my 2016 V7II Stone so I decided to change it. I have a station that sell E0 premium that is three miles from my house so that is what I normally use, but when traveling I use tier one fuel that usually is E10.

The filter was a steel/plastic combo and the plastic was brown and swollen but not cracked or leaking.
P1000433-L.jpg


As I was swapping out the filter I noticed this:
P1000434a-L.jpg


What is it? I found no reference to in the parts or service manuals, and no hoses in the tank to connect to it.
A guess is that it is a check/pressure relief valve for the return line from the fuel injectors, a feature not found on V7IIs.
Anybody know what it is?
Click to expand...

The plastic on my failed filter was soft and had separated from the metal at the seam. The 2 halves had almost completely separated.

Paul
 
Kev M said:
It is connected, under the mount, probably in a passage that's part of the flange judging from those photos.
Click to expand...
OK, makes sense. Looking at my other photo I can imagine the passage to the valve. I'm not pulling the pump from the tank to look at it closer.
 
Replaced the filter on my '13 Special on the weekend. Original filter wasn't anywhere near as swollen and bloated, I'll put that down to different countries fuel types etc.

Took a lot of fiddling to get out. Not so much fiddling to put back in...

Had a check engine light come up on the dash first time I went for ride after putting the new filter in. Stayed on while I went around the block. Came home, turned the bike off, waited for about 10 seconds, turned the bike back on, started, no more check engine light...
 
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