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Evap removal from V7III

Discussion in 'V7/V85/V9 Reference Topics/Recalls' started by Godfrey, Oct 18, 2017.

  1. Godfrey

    Godfrey High Miler GT Famiglia

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    Unfortunately, Paul, the EVAP failure I experienced recently was on a 2017 model Moto Guzzi, not some ancient piece of junk. It had nothing to do with the braking system.
     
    roadscum likes this.
  2. roadscum

    roadscum Cruisin' Guzzisti

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    Well that sux.

    Paul
     
  3. kiwi dave

    kiwi dave GT Reference

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    Yeah, I've done that on my 1200 Sports. I gotta remember to stop sharpening those metal footpegs up on the tarmac.
     
  4. kiwi dave

    kiwi dave GT Reference

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    Yeah, I've done that on my 1200 Sports. I gotta remember to stop sharpening those metal footpegs up on the tarmac.
     
    Godfrey likes this.
  5. Godfrey

    Godfrey High Miler GT Famiglia

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    Follow-up note:
    Having run with the EVAP disabled as above for several hundred miles and a couple of weeks now ...
    • There are no fuel smells from the static bike when its sitting.
    • There are no fuel smells when riding with the tank topped-up to the normal full level.
    • When the tank is approaching the reserve fuel level, I get a little whiff of fuel smell at slow speed when I hit the brakes hard or hit a bump.

    I think this is because the mostly empty tank allows more fuel to slosh around and the vapors expand out the breather hose, which ends kinda high up behind/below the starter. I think if I extended the breather hose back down to the bottom of the bike (like it was on my LeMans) and necked the hose down or capped it with a little filter, the smells would disappear.
     
    Daniel Dutra likes this.
  6. GuzziTex

    GuzziTex Just got it firing! GT Contributor

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    Two of the three clips that hold the left side cover screws snapped in half while I was doing this. Where do you source clips that aren't as fragile as the brittle factory clips?
     
  7. Godfrey

    Godfrey High Miler GT Famiglia

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    I got the ones I'm using from my dealer out of, I think, the Ducati parts listing. Same piece, but a bit sturdier construction.

    #85040551A "Quick Fastening" $2.12@
     
  8. JACoH

    JACoH Cruisin' Guzzisti

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    I got a batch of 10 on ebay for about $5, much better quality than stock. 5mm speed nuts... probably at better hardware/fastener shops, too.
     
  9. GuzziTex

    GuzziTex Just got it firing! GT Contributor

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    Thanks!
     
  10. Mayakovski

    Mayakovski Cruisin' Guzzisti GT Famiglia

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    Any update on this filter?
     
  11. BearV7

    BearV7 Just got it firing!

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    Also interested in this...
     
  12. BearV7

    BearV7 Just got it firing!

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    I love the GT tune (otherwise stock) and keep reading it works even better with the intake leak plugged so I want to try it, but the family wouldn't appreciate gas fumes in the garage so I'm thinking about doing this. Is the following process correct?

    1. Cut line between evap can and Y air intake. Put vacuum caps and clamps on both sides.
    2. Defeat the valve by either gutting it or replacing with inline fitting.
    Is that it? The air leak would be plugged, the tank pressure is relieved because the valve is gone, and the vapors/fuel get trapped by the evap can?

    Thanks! -B
     
  13. Godfrey

    Godfrey High Miler GT Famiglia

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    Follow up:

    My Racer's evap system has remained disabled exactly as I described at the head of this article for the past 2000 miles or more. It produces no gasoline fumes whatsoever, other than the miniscule whiff that occurs from fuel sloshing violently about in a nearly empty tank. It certainly doesn't produce any when just sitting in the garage.

    Next move will be to remove the evap canister entirely, as well as the line coming off the intake manifold, and plug the vacuum fitting on the manifold permanently. If I'm in a particularly caring mood, I'll fit a small K&N filter to the end of the tank vent hose to prevent the random speck of dust from going up into the tank. :D
     
    Last edited: May 29, 2018
    Mayakovski likes this.
  14. Mayakovski

    Mayakovski Cruisin' Guzzisti GT Famiglia

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    I just had this happen to me as I removed the EVAP system and I got replacements from my local dealer.
    Yamaha, part # 90183-050A6.
    They fit perfect and are nice and strong.
     
  15. GuzziTex

    GuzziTex Just got it firing! GT Contributor

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    Thanks!
     
  16. Oadslug

    Oadslug Tuned and Synch'ed

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    This next on my list. Thank you for the detailed instructions and pics. Couple questions before I begin.

    1. Regarding plugging the line from the intake — where did you source the metal slug?

    2. I was also thinking of just removing the line entirely, and capping the intake with a 1/4” vacuum cap and oetiker clamp. Would that work? or is the back pressure too great? If not, what are some other options?

    3. For those that have removed the canister entirely — it looks like it’s attached with a zip tie to a rather large metal bracket welded to the frame. Does it look a little odd without anything there? Any issue there?

    Thanks again.
     
  17. kiwi dave

    kiwi dave GT Reference

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    I still have the canister fitted on my V7-III Stone, I saw no reason to remove it. I did have to relocate it slightly when I installed the Hepco & Becker centre stand.
     
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  18. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

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    I love and understand the reason why of removal...

    but I am same as dave...if it ain't broken, don't fix it LOL...that is me
     
    Oadslug likes this.
  19. Roose

    Roose Tuned and Synch'ed

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    Just plug them with rubber plugs from an auto parts store....couple dollars. I cut a small piece of black Gorilla Brand waterproof and seal tape and sealed them off. And used less than a 1/4 inch of tape to grab and wrap the rubber slug. I don't believe the pressure is strong. Have more than 500 mile since, no issues. Yeah the canister is held by a zip tie, snip and go. No one is looking under your bike. No issue.
     
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  20. Dinsdale Piranha

    Dinsdale Piranha Cruisin' Guzzisti GT Contributor

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    The reason why is so that you get to chose when and where you take it out of the system. Better at home in the shed with tools than out on a road, in the rain and no tools.
     

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