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When i say "plugged" I mean the canister fills with liquid gasoline.  IIRC, the canister is full of activated charcoal and it is there to prevent liquid gasoline from leaking onto the ground in case of overfills and fuel expansion in the sun. I think it control how much fuel vapors go into the atmosphere, too.

When the canister is full of liquid gasoline the carb/FI cannot breathe air in because when it draws in air from the canister...it gets a glug of gasoline and gas+gas (no air) equals "no-start" , air+gas = go!.  Overfilling your tank can fill your canister and cause stalling, hard starts, and no-starts.  So can laying the scooter over, either as gasoline into the canister or too much oil in the airfilter. It can take several days for the fuel in the canister to evaporate to a point when the canister allows the air to flow to the FI/carb

Amazing what I learn about reading these forums. See ModernVespa.com for more information. http://modernvespa.com/forum/wiki-evap or http://modernvespa.com/forum/wiki-bv500-charcoal-cannister

Techguy - The more I think about it, the more I think you may have something here.  I read both those ModernVespa posts (I loved that forum when I had a Vespa!).  The only thing I'm wondering is which approach to take.

The first post recommends installing a cheap filter on the end of the hose.  I'm thinking one of those cheapie, anodized-aluminum automotive crankcase filters would be the ticket.  This is prolly what I would have done if left to my own devices.  I think you could easily get away with a line running douwn and out the bottom of the scoot with the rest of the overflow lines.  The chances of dirt/dust getting up a 6"+ tube seem pretty remote.  Is there ever a suction on that line?  Could prolly find a cheapie check valve...

The second post recommends just capping it off.  That is even easier/cheaper, but pressure buildup worries me.  I don't want to blow some gasket/seal somewhere.

Do you have any thoughts/opinions/preferences on this?  I am HAPPY to be the forum guinea pig - HA!


Axy - That bike looks like an incredible amount of fun (And wheelies).  That back tire is AWESOME

Well if/when i pull the trigger you have to share how i can put on a shad case.
So 5,100 is a good price? I think I might go for it. You are all happy with the bike from what i read here, correct?

My only hesitation is that my dealer is not that close to me, otherwise I would have snatched it up at this price.

Happy?  I maintain 80+ mph for 30-40 min on the way to work.  Filled up this morning - 69mpg.  HAHAHAHAHAHAHAHAHAH!   LOVE LOVE LOVE IT!  Suck it, Exxon!  The engine seems to have finally loosened up after break-in and I am hitting 90mph (indicated, not GPS) at WOT.

I finished the LED running light mod - I just need to get off mah booty and post the pics.

My Shad case install was a little eccentric...  I couldn't stand the thought of getting the top case for $70 and then paying $99 for the stupid adaptor kit.  Luckily, I have a welder.  I was able to fab a mount together in a couple hours for under $20.  OInce again, I have pics, just need to post - Will attempt this weekend

Goodrich - That is a crazy great deal you got!!!!

I wonder if this is anything like the Vespa charcoal canister issue.  It has to do with with the EPA required canister getting flooded or other wise plugged from a fuel overfill, an expansion of gas into the tubing/canister or a tip that causes fuel to flow into the system.

Many Vespa owners have removed, vented, or disabled the evaporative canister.

I can't imagine, the scoot being so new, that the Canister could be plugged.  Then again, I can't imagine a Narwhal is a real animal...

I DO know it gets clogged when you overfill - And I have been guilty of some EPIC overfillings!...

I'm going to figure out where that critter is, and experiment...

Axy speaks The Truthâ„¢

Likewise, Doc - I can point anyone toward an excellent dealer on FL's Central East coast that doesn't BS. 

Anything over MSRP OTD is pure, pure profit.  They still have profit padded into a good deal!  It is nice to see some dealers making money while not gouging customers.  There are some, however, that will shamelessly slay the golden goose for that egg. 

Man, What are Axy, TechGuy, et al?  Chopped liver?  LMAO!

That was the technique we used in the olden days to start a flooded carburated car engine. Put the pedal to the floor and crank it.

Kind of, but the DT300i is a fly-by-wire job - The anti-flood mode is a legit service mode, apparently.

Common issue?  Sad 

Every bike has its quirks.  The Silverwing wallows when cornering hard, The Bergman 650 oscillates at high speed, etc.  Given that this quirk is that I have to hold the starter button for 3 seconds - I think I can deal with it

Have you taken it in to the shop where you bought it? It sounds like an issue that should be handled under warranty.

Unfortunately, no. I have yet to hear of a shop that even knows what to do with the DT300i.  Most reported here don't even bother with the service manual.  Secondly, the issue ONLY manifests itself under very certain conditions - ALL of which seem to need to be met:

* The engine must be allowed to cool and sit for at least 4-5 hours. 
* It must be cool outside when the engine is turned off.
* The unit MUST be in direct sunlight for the duration of the sitting, and the temp delta must be significant.

This issue NEVER happens:  In my garage, in the shade, when the engine is warm, on cloudy days, on warm mornings, on cold evenings, if it is HOT in the garage, if it is COLD in the garage, when parked for an hour or 2, when parked overnight, at night, in the morning, etc.

So having the dealer do the troubleshooting would be difficult/useless.  Once again, given that the solution is twisting the throttle and  holding the start button for 3 seconds, on the occasions when this occurs - I'm not bothered/worried at all.

Man, when is K&N going to make an air filter for the DT300i?  It would be about the same price (LOL!), and I'd LOVE to get rid of that giant, horrendous airbox.