Don't Overfill Your Gas Tank!

[pa-outdoorsman]

Guys, last weekend, I had my UXV 450 on the trailer as I was headed over to a local farm to check trail cameras. So, I decided to swing into a gas station and fill her up with non-ethanol fuel (all I run). Anyway, I topped her off really good and went and did my thing.

A couple days later, I had the machine parked outside my garage on a VERY SLIGHT incline, with the front of the machine facing uphill. I was working in the garage and started smelling gas fumes. After looking around a bit, I realized gass was dripping from the underside of my machine right below the fuel filler. I opened the gas cap and saw there was fuel right there at the top of the fill nozzle. I move the machine to flat ground and monitored it and it seems the dripping stopped.

The next day, the same thing happened. Again, I checked and the fuel was right there. Again I moved it to flat ground. Note that I was getting NO LEAKAGE when parked in the garage on a level concrete slab.

Bottom line is this: don't "top off" your tank in these units. Apparently, I didn't do myself any favors by trying to squeeze as much fuel in as possible, and it's probably going to take until I burn off a half gallon of gas or so before I have to watch out for that leakage.

Anyone else ever experience this?

[CROSSBOLT]

Not yet! But thanks for the heads up! The UXV500i has an 8.5 gallon tank so I be cheap skate in filling up! Har, har!

[pa-outdoorsman]

Not yet! But thanks for the heads up! The UXV500i has an 8.5 gallon tank so I be cheap skate in filling up! Har, har!

I think the gas tank in the 450 is 8 gallons. If you fill it, it really lasts a long time before you need fuel again. Since I had it on the trailer, I just figured why not fill her up rather than fill up the two, 2-gallon gas cans I normally use. It cost me a whopping $15 and change to put about 6.5 gallons of non-ethanol has into her.

[airshot]

My 450i has a big sticker by the gas cap telling you to not fill the neck...on warm days the fuel will expand and push it out the neck if overfilled.  Yep...I have done it, and yep it overflows

[pa-outdoorsman]

My 450i has a big sticker by the gas cap telling you to not fill the neck...on warm days the fuel will expand and push it out the neck if overfilled.  Yep...I have done it, and yep it overflows

Thanks. Live and learn!

[souzamoto]

What also happens in some cases is that when you overfill the tank, fuel enters vent hose from the charcoal canister, the canister charcoal fills and soaks with fuel. This causes a rich or no run situation. The fix is disconnect the evap canister system (plug the lines) and let the canister dry out (take a loooooong time) or replace the canister.

[airshot]

Blow air thru the canister, still takes a long time but the air will speed it up some

[randyo]

according to manual, the 450i is 8 gallons, I have never put more than 5 in mine, even after running on empty 3 weeks, the fuel gauge must start flashing on empty when it's only down 3 gallons from full, I dunno, the tank is huge, I drive mine to the gas station occasionally, but it's out of my way, to get there, my street registration limits me to roads 40mph or less, so I can't take the most direct route, and I hate driving on pavement, it eats tires, so most of time, I add a gallon here and there out of a can, and a rarely see more than a bar or 2 on the gauge

[Heck]

Had this problem with my 700i- sometimes I forget when filling....It reminds me....I decided to carry 2 rotopaks for an additional 4.5-5 gallons....Never had to use them yet- I use them to fill the yard tractor.

[airshot]

I watch the fuel gage closely then moniter how much fuel it takes ro fill it.  On ocassion I just add 2 gallons then check gage, then add 2 more gallons and check again.  Keep doing that to check gage accuracy.  Mine has been quite good as far as accuracy.  I can guess pretty close how much fuel it will take to fill it.  A word of caution guys....that is a steel tank...if your not gonna keep it full then watch for moisture condensation or you will end up with a rust hole!!!  I tey to keep mine full when just setting and add stabil blue to help with any moisture.

[TomFIV]

Yes, I made that mistake once. Plus the temperature outside climbed about 30 degrees after I filled it. It takes a long time for these machines to burn through fuel. We drove for about 25 miles before I didn't need to pop the cap while we were stopped.

[airshot]

I ride with some guys that have 4 wheelers,  they stop for gas twice, and I still have plenty.  On their third stop for fuel, I fill mine!! Actually does really good on fuel consumption !!!

[randyo]

I ride with some guys that have 4 wheelers,  they stop for gas twice, and I still have plenty.  On their third stop for fuel, I fill mine!! Actually does really good on fuel consumption !!!

I use mine a lot on the street for work,  offroad tires last about 1 tank of gas

[airshot]

I use mine a lot on the street for work,  offroad tires last about 1 tank of gas

Yes that does wear them quickly, especially the more knarly tread pattern tires!!  I switched over to the SunF ao33 and the pavement wear has been far less!!  Also a much smoother ride on the pavement.  In my atea we can ride on the road, so I take my puppy on lots of rides just to get out of the house. However their mud traction seems very good, havent buried it yet, but no hesitation on the mud I have been thru so far. The SunF tires have a really heavy side wall so they will still stay up with little to no air if a puncture occurs. I tried running them at 2 lbs just to see and yep, they worked, just need to keep speed slow so the side wall doesnt roll off the rim in a corner.  If I were purely pavement riding then that would be different, but for all around use these have been excellent so far.
Just an added note here, be sure to add some fuel stabilizer on ocassion if your fuel level stays below full, to much crappy gas nowadays to allow moisture in these steel tanks. I use the blue marine stabil or Lucas fuel treatment in all my toys and have never had an issue, however my neighbor insists that stuff is a waste of time while he struggles every year with moisture in his fuel tanks on his toys !!!