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post #1 of 8 (permalink) Old 10-13-2009, 10:09 PM Thread Starter
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Gas Overflow After Fill-up

Tonight I filled up after riding home from work. Well, it's a real short ride home from the gas station, and when I got home I immediately garaged the bike. You might remember that I've noted my baby is riding a touch hotter after installing our VN750 radiator grill cover. So the temp indicator shows just past the thermometer icon, and I shut her off and put her in the garage. Ten minutes later I smell gas in the house, pretty strong. Go in the garage and it's real bad, with a small puddle of gas under the rear part of the engine. No active leak in sight.

My guess is that the tank was full, the heat was high and the gasoline vented through the gas cap or some other vent tube. If so, everything was working properly and I don't have a crack or leak to worry about. Anyone else have some insight on what it might be or if I'm missing something here? Thanks...

Rubyrick

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post #2 of 8 (permalink) Old 10-13-2009, 10:37 PM
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Hope you don't have a natural gas hot water heater anywhere near your garage!

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post #3 of 8 (permalink) Old 10-13-2009, 10:40 PM
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Quote:
Originally Posted by rubyrick View Post

My guess is that the tank was full, the heat was high and the gasoline vented through the gas cap or some other vent tube. If so, everything was working properly and I don't have a crack or leak to worry about. Anyone else have some insight on what it might be or if I'm missing something here? Thanks...

it doesnt even have to be hot for this i notice it everytime i get a lil to much gas and have to run into the store .... this drip happens all the time ... thats why my chosen gas stations are 15 miles from my house or work ...


Moving into the sticks so my gas station is gonna be more like 40 lol ... thinking about stashin an emergancy gas can in the bushes on the side of the road half way lol



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post #4 of 8 (permalink) Old 10-14-2009, 12:39 AM Thread Starter
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Quote:
Originally Posted by flitecontrol View Post
Hope you don't have a natural gas hot water heater anywhere near your garage!
Excellent point, even though it sounds funny.

Quote:
Originally Posted by seebeeare View Post
it doesnt even have to be hot for this i notice it everytime i get a lil to much gas and have to run into the store .... this drip happens all the time ...
I think I filled up too high to the brim of the neck of the tank. Plus I've been running a bit hotter than I used to. Need to let my baby cool off before putting her into the garage.

Rubyrick

MY BABY...
'05 VN750
16,000 miles +
Kawi tank bib
Kawi rear rack
Small windshield
DEKA M/F battery
VN750.com Grill Cover
LED license plate frame
Clear Alternatives LED brake light
Cortech mini tank bag on rear rack
Pirelli MT66 Tires: 110 front / 150 rear
Splines lubed when tires installed at 10,650 miles
Splines lubed again at 14,400 with stubby valve stem install

Place your mouse on the X below and drag to the O

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Even though you can't see Him, GOD is there! O
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post #5 of 8 (permalink) Old 10-14-2009, 12:57 AM
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My bro's Triumph (900 triple) does this in warm to hot weather. We were riding in 90 degree heat this summer, stopped for gas and to hydrate ourselves. While sitting on a bench enjoying some iced tea, his bike started squirting gas out the overflow tube. The gas cap had to be removed to prevent the flow from restarting due to sealed fuel systems and expanding gases on newer bikes. BTW, that Triumph engine runs lean and much hotter than our VN's.

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post #6 of 8 (permalink) Old 10-14-2009, 02:39 AM
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Quote:
Originally Posted by rubyrick View Post
I think I filled up too high to the brim of the neck of the tank. Plus I've been running a bit hotter than I used to. Need to let my baby cool off before putting her into the garage.
a trick my buddy did for his garage is he installed a bathroom exhast fan in his garage and wired it to the automatic light on his garage door opener so it shuts off after a couple minutes and gets the exhast smells out of his garage ... kinda not related ....



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If u dont have it already Here is the Service Manual
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post #7 of 8 (permalink) Old 10-14-2009, 06:47 PM
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Garage
Page 28 of the owners manual:

"Never fill the tank so the fuel level rises into the filler neck. If the tank is overfilled, heat may cause fuel to expand and overflow through the vents in the tank cap"


Many bikes now when you open the gas cap , have what looks like a metal can with a nozzle hole in the bottom recessed about 2-3 inches inside the tank. ...you only are supposed to fill the tank till the level reaches the bottom of the "can"...which can be a bit tricky.

I know some folks get a bit OCD'd when filling the tank , some go as far as to put the bike on the centerstand...rationalizing that you can shove more fuel in then. But unless you are traveling on the bike there is no reason to fill it so much. Keep in mind that gas draining out the vent hose ends up hitting the ground .......right in front of your rear tire. And if you ever found yourself riding over some spilled fuel, you know how slick the road suddenly becomes.

I agree that the fuel on your garage floor is more than likely draining from the vent hose, but given the recent post with the bike that caught fire...I would keep an eye on it for a few days to make sure it is not someting else. Fuel leaks are not something to disregard.

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post #8 of 8 (permalink) Old 10-14-2009, 11:05 PM Thread Starter
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Thanks KM, I appreciate your concern and the logic of your post. I've been watching it VERY carefully and it appears so far to have been an isolated case. Took the seat off today to make sure there wasn't any fuel spilled into the battery compartment or surrounding areas. Most likely the biggest factor was my filling to the brim, which I don't normally do. But also I've been concerned that I'm running a bit hotter since installing the new grill cover. Even at night my temp gauge is a bit higher than it used to be. And now this incident.

Rubyrick

MY BABY...
'05 VN750
16,000 miles +
Kawi tank bib
Kawi rear rack
Small windshield
DEKA M/F battery
VN750.com Grill Cover
LED license plate frame
Clear Alternatives LED brake light
Cortech mini tank bag on rear rack
Pirelli MT66 Tires: 110 front / 150 rear
Splines lubed when tires installed at 10,650 miles
Splines lubed again at 14,400 with stubby valve stem install

Place your mouse on the X below and drag to the O

X
Even though you can't see Him, GOD is there! O
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