Ridemalibu Motorcycle Rentals & Tours – Los Angeles CA
  1. Ciao Guest - You’ve landed at the ultimate Guzzi site. In SoCal? See the SERVICE tab above for the best in service, tires, tuning and installation of our products or custom work. NEW FORUM REGISTRATIONS REQUIRE EMAIL ACTIVATION - CHECK YOUR SPAM FOLDER. ALWAYS TRY A SEARCH BEFORE STARTING A NEW TOPIC - Most questions you may have are already answered on the Forum with FACTS, NOT OPINIONS. PLEASE DON'T BE A DRIVE-BY POSTER: As a common courtesy, check back if you are posting elsewhere on the web. Note there's decades of Guzzi hands-on experienced help on this site, all whom give endless amounts of their time for free; BE COURTEOUS AND RESPECTFUL! There is zero tolerance on personal attacks and off-site links to other Forums or competing products. Also be sure to click on the STORE link also above for our 600+ product inventory, including many of our 100% Made-in-house-USA GTM products and engine kits. We appreciate the consideration, understanding and your business... past and future. And if you haven't seen our MotoCycle (not) art, click on the BUILDS tab above to see our work at our sister business; GT MotoCycles®-- WE ARE ONLINE ONLY - NO PHONE CALLS MADE OR RECEIVED.

V7 fuel filter WARNING!

Discussion in 'V7/V85/V9 Chat & Tech' started by GT-Rx®, Feb 4, 2014.

Thread Status:
Not open for further replies.
  1. johnpaul

    johnpaul Just got it firing!

    Joined:
    Sep 14, 2013
    Messages:
    16
    Likes Received:
    9
    Location:
    Williamsburg
    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.
     
  2. Dinsdale Piranha

    Dinsdale Piranha Cruisin' Guzzisti GT Contributor

    Joined:
    Jul 16, 2017
    Messages:
    415
    Likes Received:
    146
    Location:
    West Oz
    Does anyone know for sure whether the v7iii has the 50/50 filter or all metal?
     
  3. King of Fleece

    King of Fleece Cruisin' Guzzisti GT Famiglia

    Joined:
    Dec 10, 2014
    Messages:
    245
    Likes Received:
    42
    Location:
    Western New York
    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.
     
  4. Dinsdale Piranha

    Dinsdale Piranha Cruisin' Guzzisti GT Contributor

    Joined:
    Jul 16, 2017
    Messages:
    415
    Likes Received:
    146
    Location:
    West Oz
    Oh well, that's another item on my order.
     
  5. Brian UK

    Brian UK GT Reference

    Joined:
    Nov 6, 2008
    Messages:
    2,008
    Likes Received:
    186
    Location:
    Addlestone, Surrey, UK
    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.
     
  6. King of Fleece

    King of Fleece Cruisin' Guzzisti GT Famiglia

    Joined:
    Dec 10, 2014
    Messages:
    245
    Likes Received:
    42
    Location:
    Western New York
    Funny. They told me it was designed for non-ethanol gasoline only.
     
  7. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

    Joined:
    Jan 26, 2017
    Messages:
    233
    Likes Received:
    83
    Location:
    Surrey BC Canada
    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
     
  8. Kev M

    Kev M Cruisin' Guzzisti

    Joined:
    Feb 11, 2009
    Messages:
    425
    Likes Received:
    81
    Location:
    Medford, NJ
    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.
     
    Last edited: Sep 1, 2017
    BearV7 likes this.
  9. JACoH

    JACoH Cruisin' Guzzisti

    Joined:
    Nov 22, 2016
    Messages:
    182
    Likes Received:
    80
    Location:
    Pacific Northwet
    Timmy the Hog, yes we do have ethanol free gas, at least here in Oregon. 92 octane. Mainly independent stations.
     
  10. roadscum

    roadscum Cruisin' Guzzisti

    Joined:
    May 1, 2009
    Messages:
    336
    Likes Received:
    124
    Location:
    SW Florida
    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
     
    Trout and GT-Rx® like this.
  11. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

    Joined:
    Jan 26, 2017
    Messages:
    233
    Likes Received:
    83
    Location:
    Surrey BC Canada
    ah...good to know...maybe just the stations that I visited didn't have them...

    mostly the Washington states stations I have visited...
     
  12. RedHawk47

    RedHawk47 Tuned and Synch'ed GT Famiglia

    Joined:
    Jul 22, 2014
    Messages:
    93
    Likes Received:
    22
    Location:
    Berthoud, CO
    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.
    [​IMG]

    As I was swapping out the filter I noticed this:
    [​IMG]

    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?
     
  13. Kev M

    Kev M Cruisin' Guzzisti

    Joined:
    Feb 11, 2009
    Messages:
    425
    Likes Received:
    81
    Location:
    Medford, NJ
    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.
     
  14. RedHawk47

    RedHawk47 Tuned and Synch'ed GT Famiglia

    Joined:
    Jul 22, 2014
    Messages:
    93
    Likes Received:
    22
    Location:
    Berthoud, CO
    That's what I thought. But why is it there? It is not connected to anything - I looked for a tube inside the tank.
     
  15. Kev M

    Kev M Cruisin' Guzzisti

    Joined:
    Feb 11, 2009
    Messages:
    425
    Likes Received:
    81
    Location:
    Medford, NJ
    It is connected, under the mount, probably in a passage that's part of the flange judging from those photos.
     
  16. roadscum

    roadscum Cruisin' Guzzisti

    Joined:
    May 1, 2009
    Messages:
    336
    Likes Received:
    124
    Location:
    SW Florida
    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
     
  17. RedHawk47

    RedHawk47 Tuned and Synch'ed GT Famiglia

    Joined:
    Jul 22, 2014
    Messages:
    93
    Likes Received:
    22
    Location:
    Berthoud, CO
    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.
     
    Kev M likes this.
  18. BenRCMC

    BenRCMC Tuned and Synch'ed

    Joined:
    Aug 9, 2015
    Messages:
    42
    Likes Received:
    27
    Location:
    Perth, Western Australia
    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...
     
    roadscum and Harley Loffler like this.
  19. BenRCMC

    BenRCMC Tuned and Synch'ed

    Joined:
    Aug 9, 2015
    Messages:
    42
    Likes Received:
    27
    Location:
    Perth, Western Australia
    A good bit of preventative maintenance that cost me about $8AUD all up.
     
  20. GR1

    GR1 Tuned and Synch'ed

    Joined:
    Oct 2, 2017
    Messages:
    30
    Likes Received:
    20
    Location:
    Los Angeles
    Check www.pure-gas.org for your state and you can see where eth free fuel is! Sadly california has almost none :(
     
    DETRoadster and TimmyTheHog like this.
Thread Status:
Not open for further replies.

Share This Page