Modern Vespa

I live in California and all the pumps have stupid 'foreskin'....

Peel it back. When filling up small tanks like scooters have, have both hands on the handle, and look down into the tank as it fills. You have to get good at "feathering" the trigger. Putting the nozzle in a clicking the trigger then walking away..... bad things man, very bad things.

Good luck with that foreskin.

I miss King of the Hill...

I do not top up.

I seriously doubt anyone is having a rough idling problem due to over filling the tank on a BV350. The gas tank is quite low on a 350 unlike the Vespas. If you do overfill it, the gas simply runs over into the catch area around the filler neck and drains out through a tube onto the ground. The evap system is higher than the tank and it seems unlikely to me that overfilling could force fuel up into the evap cannister. My experience with the evap system on the BV350 is that it is trouble-free and not a source of problems. As far as filling the 350 - I pick stations without the large hood around the nozzle. I fuel with the nozzle oriented from the side, insert it all the way into the tank, and continue until the auto shutoff. I do not top up. I'm not having difficulty with overfilling.

...I did notice that if I insert the nozzle in all the way, stop a the first auto-off point, that there is room in the tank for another litre or so.

I've found the same thing with the auto-off point. I remove the nozzle, shake the handle bars, and the tank seems to "burp" allowing more room for fuel.

I seriously doubt anyone is having a rough idling problem due to over filling the tank on a BV350. The gas tank is quite low on a 350 unlike the Vespas. If you do overfill it, the gas simply runs over into the catch area around the filler neck and drains out through a tube onto the ground. The evap system is higher than the tank and it seems unlikely to me that overfilling could force fuel up into the evap cannister. My experience with the evap system on the BV350 is that it is trouble-free and not a source of problems. As far as filling the 350 - I pick stations without the large hood around the nozzle. I fuel with the nozzle oriented from the side, insert it all the way into the tank, and continue until the auto shutoff. I do not top up. I'm not having difficulty with overfilling.

And the ones who are trying to get that last half liter of fuel in are the ones who are overflowing the tank .

If I can skew this topic a bit, I'd like to know what sort of distance others are able to go on a full tank on the BV350. I just did about 210 kms, and still only put about 8.5 l in; that leaves almost 5 l in the tank, assuming a 13 - 14l total fuel capacity. My fuel light had come on about 10 k earlier.

For you imperial holdouts, I did 130 miles, but still had a gallon or more (US gal) in the tank, at least as far as total tank capacity goes.

So, just wondering what others are getting for tank range, in general commuting use.

If I can skew this topic a bit, I'd like to know what sort of distance others are able to go on a full tank on the BV350. I just did about 210 kms, and still only put about 8.5 l in; that leaves almost 5 l in the tank, assuming a 13 - 14l total fuel capacity. My fuel light had come on about 10 k earlier.

For you imperial holdouts, I did 130 miles, but still had a gallon or more (US gal) in the tank, at least as far as total tank capacity goes.

So, just wondering what others are getting for tank range, in general commuting use.

If I can skew this topic a bit, I'd like to know what sort of distance others are able to go on a full tank on the BV350.

FWIW. A couple of scenarios from a long trip this week end.

Setup:
- Starting with a full tank and reset the odo each time.
- Removed the stock windscreen and have a Shad 48 topcase.
- Speed measured by GPS.
- The bike is just starting out, currently with 650 miles.

1. City:
Avg speed: 45 - 50 MPH (once topped at 60 for a minute)
Light on: 142 miles (0.87 gallons calculated)
Bingo: 199.8 miles
Fill: 2.982 gallons
MPG: 66.6

2. Highway
Avg speed: 83 mph (this was WOT cuz I had to get home)
Light on: 120 miles (0.75 gallons calculated)
Bingo: 160.2 miles
Fill: 2.994 gallons
MPG: 53.5

In both cases I filled up from dry. Yup, walk of shame up to the pump. <Next>

This stunt put me over the break-in mileage (and gave my calves a serious workout) so I will be taking it into the shop for maintenance (and a rest). Given other peoples experience I expect to gain some mpg around 1500 miles. I don't know where that remaining 0.4 gallons total capacity went but I sure could have used it.

I believe Hernesage has posted the best information (ran the tank dry twice) at the thread linked below, but here is the post: