Nomorefours Posted April 15, 2020 Report Share Posted April 15, 2020 Hi, All New to this forum, and happy to find it! I bought a 2004 V11 Lemans Corsa Nero late last summer, and I have really enjoyed a handful of rides on it so far. Happily, the bike is in excellent condition, and runs very well, with just a couple of very minor issues... 1. If I fill the gas tank all the way, fuel 'weeps' out of the fuel cap and ends up on my riding pants...not so nice. Once it is lower than maybe 7/8 full, it no longer happens. This does not seem related to pressurization; I think the fuel is literally sloshing against the cap and getting past it when the level is high enough. The cap appears to function normally, BUT I have noticed there does not seem to be any 'rubber' seal. The cap has a metal ring that is spring loaded, and when closed this metal ring presses against a raised cream-coloured plastic lip. So it is metal against plastic, which does not seem like a great way to make a seal. Today I found some parts schematics online, but the fuel cap is only shown as a complete assembly. I cannot tell if there is a rubber ring missing on mine, or not. Searching photos online has been pretty fruitless. Can anyone tell me if there is supposed to be a rubber ring, probably attached to the steel ring on the cap itself, to make a proper seal? I have searched this forum, and found a reference to 'removing the rubber grommet on the cap' to solve tank pressurization / depressurization issues. Is it possible the former owner followed this advice, and would it be the same rubber ring I am wondering about? If my only resolution is to never fill the bike more than 7/8 full I guess I could live with it, but I would rather just have the cap seal and function properly. I also read about Oberon fuel caps, but could not find a specific part number or model (since their website does not list one for the V11 Guzzis). I don't really want to spend that $$ anyhow, when I can probably find a rubber ring at my local salvage yard (presumably from a different bike). 2. The bike has Mistral mufflers which look and sound fantastic, and as far as I know stock ECU and air box. It runs well, but *occasionally* stumbles around 3 - 4000 rpm. It is not consistent. Most of the time it does not stumble, just sometimes...but when it does, it is always around the same rpms. I have not been able to determine any other constancy like outdoor temperature, bike warmed up or not, or anything else. It just seems to randomly stumble around 3k - 4k on steady throttle. Any thoughts or comments related to the above, are most welcome! Thanks, Doug Link to comment Share on other sites More sharing options...
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