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Unread 04-05-2006, 11:28 PM   #1
Dudewayne
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19 Gallon Tank only fits 15 gallons

My gas tank is supposed to be a 19 gallon, so it says on my build sheet. I ran it nearly empty and was only able to cram 14.3 gallons in it. What's the deal ?
Duane

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Unread 04-05-2006, 11:39 PM   #2
Black Hills TJ
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Maybe it wasn't quite empty

sometimes mine will take 13...other times it takes 18.5
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Unread 04-05-2006, 11:41 PM   #3
rugger81
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i don't know about everyone else, but I can drive at least 40-50 miles after the needle hits the empty line. Then fill up the tank by putting about 17.5 gallons in.
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Unread 04-05-2006, 11:41 PM   #4
volleygirlamy
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I've heard this a lot actually... it tops off early. YOu can change it, but it takes a lot of work is what i've been told. So when it clicks off at the pump.. you could really keep pumping i think.... I've seen write ups on changing this.
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Unread 04-05-2006, 11:42 PM   #5
Black Hills TJ
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I have to hold the handle on the pump about midway or it just clicks out here around town at a few stations >_<
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Unread 04-06-2006, 12:02 AM   #6
michael k
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I've had my TJ only a week,2 days after I bought it ran out of gas.The needle wasn't even in the red mark thats above the 'E'.Filled it up and only took 14.6 gallons.
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Unread 04-06-2006, 03:19 AM   #7
trailboss
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I have driven way to the left of "E", after the gas light comes on, only to fill up at 15.9 or 16.4 or something....the gauges are notoriously inaccurate. Sometimes air gets trapped in the tank preventing the top off. I have shaken my jeep back and forth with the nozzle in the tank, and have been able to fit a gallon or two more...
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Unread 04-06-2006, 03:35 AM   #8
jzmtl
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TJ gas gauge goes to empty with 4 or 5 gallons of gas left for a lot of people, I know mine does.
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Unread 04-06-2006, 05:49 AM   #9
adam728
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When my low fuel light comes on I can usually only get 13-14 gallons in mine. If I let it go a while after it's "empty" I can get 17 or so. I haven't tried pushing my luck farther than that.
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Unread 04-06-2006, 06:34 AM   #10
BChamberlin
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Yeah, we talked about this a short while ago. Everyone seems to have a different situation. I can never seem to get more then 17 gals in my tank and I have 19 gal tank. Even if I trickle it.... it will start dribbling out.
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Unread 04-06-2006, 07:21 AM   #11
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Quote:
Originally Posted by michael k
I've had my TJ only a week,2 days after I bought it ran out of gas.The needle wasn't even in the red mark thats above the 'E'.Filled it up and only took 14.6 gallons.

what year is your TJ?

cause in '97-'99, the standard tank was 15-gallon...the 19-gallon was a ~$200 option...

Greg
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Unread 04-06-2006, 07:52 AM   #12
FlexyTJ
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I could be wrong on this- but I think all TJ's have the 19gallon tank. In most of them there is a plastic check ball installed in the tank where the filler neck dumps in and artifically cuts off at 15 gallons. If you're up for dropping to fuel tank from the vehicle, removing the pump/sending unit, you can remove the plastic cage and check ball in the filler neck area- and that will allow the tank to hold 19gals..
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Unread 04-06-2006, 08:45 AM   #13
BigWaylon
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Quote:
Originally Posted by FlexyTJ
I could be wrong on this- but I think all TJ's have the 19gallon tank. In most of them there is a plastic check ball installed in the tank where the filler neck dumps in and artifically cuts off at 15 gallons. If you're up for dropping to fuel tank from the vehicle, removing the pump/sending unit, you can remove the plastic cage and check ball in the filler neck area- and that will allow the tank to hold 19gals..

not exactly how it works...

the plastic ball is an anti-siphon valve...and has no effect on how much gas can be put in the tank...


the tanks are all the same size, but the difference is the length of the vent tube...the smaller of the two tubes you can see from the outside (the other is obviously the filler neck)...

if you ever drop the tank, you can reach inside and cut the vent tube flush with the inside of the tank, and have about a 20 gallon tank...we routinely get 18.5+ gallons in the '99 after doing this to a tank that was 15-gallon from the factory...

Greg
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Unread 04-06-2006, 08:49 AM   #14
FlexyTJ
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Greg,

Thanks for the info- I havent actually done this mod yet, still gathering info on it- obviously I need to gather some more Still in the stage of deciding wheter or not to keep the stock tank and do some re-locating or go with a fuel cell upon wheelbase stretch...
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Unread 04-06-2006, 08:53 AM   #15
BigWaylon
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Quote:
Originally Posted by FlexyTJ
Greg,

Thanks for the info- I havent actually done this mod yet, still gathering info on it- obviously I need to gather some more Still in the stage of deciding wheter or not to keep the stock tank and do some re-locating or go with a fuel cell upon wheelbase stretch...

Fuel Cell...I love mine...

if you're considering a fuel cell, it must mean you're willing to give up some rear space...(unless you're going behind the rear seat)...

you could save a few bucks and just build a "case" for the factory tank...

none of these pics show it real well (because I was taking them for a different reason)...but this guy has what looks like a tool box behind his rear seat that just has the factory tank sitting in it:






fabbed up a small bracket to hold the filler neck in place...and it's good to go...

the Jeep is sitting at the shop where mine is, and I'm heading by there in a little while...if you want a couple more pics, let me know...

Greg
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