Gasoline Evaporation of 3/4 gallon per week ???????
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โApr-15-2014 02:52 PM
Thanks,
Brad
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โApr-17-2015 04:14 AM
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โApr-16-2015 12:53 PM
CAMPING: WHERE YOU SPEND A SMALL FORTUNE TO LIVE LIKE A HOMELESS PERSON.
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โApr-16-2015 11:32 AM
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โApr-16-2015 11:27 AM
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โApr-15-2015 03:00 PM
Ethanol might evaporate through the smog stuff more easily, maybe? Yeah, blame it on ethanol.
2013 Tiffin Allegro 35QBA
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โApr-15-2015 01:26 PM
Do you fill up the tank until it is just about flowing out of the cap or do you stop when the pump FIRST stops automatically. If you overfill your tank, some of the extra fuel will immediately go to the canister that on some vehicles is used to absorb gasoline fumes. The newer fuel systems are sealed so evaporation is not happening but if you overfill your tank in cool weather, you can count on some fuel leaving your tank due to heat expansion when it gets warmer.
Personally I don't know how I could accurately measure such a small loss on my 75 gallon tank.
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โApr-15-2015 01:17 PM
Old-Biscuit wrote:Dog Folks wrote:
Check your friends. It has occurred that "friends" would siphon off a gallon a week for a period of time and then start adding a gallon a week, just to drive the owner nuts!
A game camera may help.
:B
Did that to a supervisor in early '80s.
He had bought a new Volkswagen. We added gas. He kept bragging about the fantastic gas mileage.
Then after he took it in for free tune up/oil change etc. after breakin period we siphoned gas off.
He took it back to dealer and complained.....asked then what the heck they had done to ruin his gas mileage.
:B:B:B:B:B:B
2002 Newmar Dutch Star DP 3872, Cummins 350 ISC, Spartan Chassis
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โApr-15-2015 07:12 AM
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โApr-16-2014 10:22 PM
Brad777 wrote:
The most I have gone is three weeks and it was 2.25 gallons loss. In the past I have gone months and that is when I decided to start my test.
Well why didn't you say this before. Sounds like you have a gas leak! You should get that fixed.
2021 Nexus Viper 27V. Class B+
2019 Ford Ranger 4x4
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โApr-16-2014 07:25 PM
Brad777 wrote:
Thank you all for the info. I will look for a vent line coming from the top of the tank to a vapor recovery canister. Being that my Bounder is a 1995 Ford chassis I wonder if it would have a vapor recovery unit. I can tell you all that there is no leaks of gas under the rig and 3/4 of a gallon is no big deal except for it is 3/4 of a gallon every week ! It adds up !
My coach is a 1976 and it had two vapor recovery canisters (due to size of tank) so I can guarentee that yours has at least one and possibly two. They have been required for a long, long time.
Stop overfilling the tank and the gas will stop disappearing and stop "adding up".
Gas to Diesel Conversion project
76 FMC #1046, Gas Pusher became a Diesel Pusher
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โApr-16-2014 06:31 PM
1995 Jeep Wrangler toad
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โApr-16-2014 03:11 PM
Dog Folks wrote:
Check your friends. It has occurred that "friends" would siphon off a gallon a week for a period of time and then start adding a gallon a week, just to drive the owner nuts!
A game camera may help.
:B
Did that to a supervisor in early '80s.
He had bought a new Volkswagen. We added gas. He kept bragging about the fantastic gas mileage.
Then after he took it in for free tune up/oil change etc. after breakin period we siphoned gas off.
He took it back to dealer and complained.....asked then what the heck they had done to ruin his gas mileage.
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31
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โApr-16-2014 01:37 PM
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โApr-16-2014 12:45 PM
Brad777 wrote:
Thank you all for the info. I will look for a vent line coming from the top of the tank to a vapor recovery canister. Being that my Bounder is a 1995 Ford chassis I wonder if it would have a vapor recovery unit. I can tell you all that there is no leaks of gas under the rig and 3/4 of a gallon is no big deal except for it is 3/4 of a gallon every week ! It adds up !
How long do you let it sit between uses? Trying filling it up and then just leave it alone for however long you can then see how much is missing. I'll bet no matter how long you leave it you'll find it takes 3/4 of a gallon every time to top it off because that's how much goes out the overflow. Once that 3/4 is gone, it will maintain that level.
2021 Nexus Viper 27V. Class B+
2019 Ford Ranger 4x4