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Fueling problem
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=3&t=49793
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Author:  stamasd [ Mon Feb 01, 2010 4:44 pm ]
Post subject:  Fueling problem

I've had my KJ for about 3 weeks now, and I noticed a problem like I've never had with any car before. Every single time I fill it at the pump, the fuel overflows right at the end. Like if the pump can't sense the tank is full and shut down in time, so it keeps pumping in the full tank. This is happening at all my regular pumps, which don't do it with any of my other cars. I even went to a couple of pumps I've used infrequently before and it happens there as well. Every time I get several ounces of gasoline spilled, sometimes squirting under pressure between the pump spout and the fill hole. Last night was the worst of all, with about 6-7oz spilled on the ground and another ounce or so on my clothes. I hate spilling gasloine like this, plus it creates a fire hazard. What could be the problem? I don't even know where to start looking.

Author:  Boiler [ Mon Feb 01, 2010 5:09 pm ]
Post subject:  Re: Fueling problem

This has been discussed many times and I've never really seen a good universal solution. I seem to get this problem only when it is cold (under 35 degrees).

Basically I drive until the tank is near empty, and always put 17-19 gallons in when I fill up. Once I hit about 14 gallons on the pump I back off the automatic release to the slowest notch, and at about 16 or 17 gallons I back it off and just barely run it by hand. Once it clicks and stops I don't squeeze in another drop.

No it doesn't solve the problem, but it may save your shoes. I believe there have been some that got a new gas tank or vents or something, but I'm not sure. You should probably do a search for overflow or something, there have been at least 3-4 seperate threads on here in the past year about this.

Author:  stamasd [ Mon Feb 01, 2010 5:37 pm ]
Post subject:  Re: Fueling problem

Oh so it's a known problem :( I frankly didn't even know what to search for. OK, I'll be minding my gallons then. This won't be too painful as I have a very regular pattern of driving, and I can already tell pretty much to the half-gallon the amount of fuel I'll have to put in every time. And if 'm a gallon short of a full tank it won't matter much.

Too bad there's not a definitive fix.

Author:  JeepinJarhead03 [ Mon Feb 01, 2010 5:39 pm ]
Post subject:  Re: Fueling problem

could be a stopped up breather hose coming from the fill neck, those hoses degrade pretty quickly but usually they'll start throwin CEL's with an evap leak if thats the case

Author:  stamasd [ Mon Feb 01, 2010 5:46 pm ]
Post subject:  Re: Fueling problem

Well I have no CEL on.

Author:  XJMA [ Mon Feb 01, 2010 9:24 pm ]
Post subject:  Re: Fueling problem

That's funny, we have two 06 KJs at work, and now they both do it!! they never did it when new, then one started doing it while the other didn't. Now both do!!!! My wifes 04 doesn't do it at all, and it's got 130k+.

I've just started basically judging how much gas the vehicles need (say each quarter of the tank is rougly 4-5 gallons) and when I get within 2 gallons of full I throttle that gas pump back. I'm sure it has something to do with the vent lines and the factory should fix it but I doubt they're going to recall and fix it for free. They really should. I have filled up much older shitboxes and never had that problem!! ??????

Author:  JeepinJarhead03 [ Mon Feb 01, 2010 9:42 pm ]
Post subject:  Re: Fueling problem

since the aging components in that section is the breather hoses, i'd start there, it's a time consuming, but worthwhile investment of just a few dollars

Author:  haulin5 [ Mon Feb 01, 2010 9:50 pm ]
Post subject:  Re: Fueling problem

Both of ours do it. I watch the pump, and when it's nearing the tank capacity, I get out & listen to it fill. You can hear when it's almost to the top, right before the pump shuts off & your $$$$ goes all over the pavement.

Author:  backfire103 [ Wed Feb 03, 2010 5:46 pm ]
Post subject:  Re: Fueling problem

I have the same problem with my '05 renegade. It has 60k on it an has done it since I purchased it. I just deal with it. Not worth the hassle to mess with my fuel system.

Author:  JeepinJarhead03 [ Wed Feb 03, 2010 6:02 pm ]
Post subject:  Re: Fueling problem

must be an 05+ thing

Author:  XJMA [ Thu Feb 04, 2010 3:06 pm ]
Post subject:  Re: Fueling problem

Must be 05+, because the wife's 04 has 130k+ and has never done it!!

Luckily the company vehicles that I fill up, I'm not paying for the gas!!
I would imagine they would want to do a recall for this???

Author:  Mudder [ Tue Feb 09, 2010 7:20 pm ]
Post subject:  Re: Fueling problem

Naw, my wifes '04 does it. It sprays gas everywhere. One time the pump never shut off and I was on the other side of the Lib washing the front windows. I almost crud my pants when I saw the gas shooting out of the filler neck :shock: . Seamed like a long time to get around the front of the lib to the nozzle. Who knows how long it was doing that. :oops:

Author:  tommudd [ Tue Feb 09, 2010 7:36 pm ]
Post subject:  Re: Fueling problem

My 04 has never done it

Author:  Mudder [ Tue Feb 09, 2010 7:38 pm ]
Post subject:  Re: Fueling problem

Well then Tom, I guess my wifes lib is special. :P Just don't tell here that.

Author:  tommyt [ Tue Feb 09, 2010 9:54 pm ]
Post subject:  Re: Fueling problem

My 05 just started to do this 2 fill-ups ago!

Author:  STINGN [ Tue Feb 09, 2010 10:20 pm ]
Post subject:  Re: Fueling problem

Never had this happen, but I always seem to get some on my jeans :x

Author:  RED_KJ_666 [ Tue Feb 09, 2010 10:55 pm ]
Post subject:  Re: Fueling problem

My 04 has always done it. From 90'000KM when I got it. never didn't shut down the pump but always sprayed out just a bit. I just pump by hand now and have gotten used to the sound of it almost full.

Author:  jimymc [ Wed Feb 10, 2010 7:08 pm ]
Post subject:  Re: Fueling problem

I have 115K on my Renny and have never had a problem with this, thank goodness.

Author:  timmyb457 [ Mon Feb 15, 2010 7:25 pm ]
Post subject:  Re: Fueling problem

My 05 Rennie has been doing it since 50k

Author:  stamasd [ Wed Feb 17, 2010 12:46 pm ]
Post subject:  Re: Fueling problem

Update.
What I've been doing recently is: fuel up until I'm about 1-2 gal short of full per my calculations, then continue in 1/3 gal bursts until full. Have had no more spillage this way.

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