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I am new to this site so please forgive me if this thread is out of context. I have found a solution to the fuel splash back problem in the 2007-2011 Jeep JK! There is a part that can be replaced in the fuel intake line. This part (#CNNNX321AC) can be ordered on line at amazon. The cost is around $35.00. This part has a check valve which keeps the fuel from splashing back out of the fuel line filler. I installed this part yesterday and now no splash back. It took me all of about 20 min. to replace the part. I hope this helps!!
 

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i am pretty sure there was a TSB recall for the fuel splashback where they will be repaired by dealers if one of the affected models? Either way, nice to have options ...:jeep2:


(edit: don't forget to hit the Welcome Room and introduce yourself sometime . Welcome to JKOwners , btw :wink2:)
 

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A JKO DICK
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TSB did not include my 07 2 door. It was not a problem, never happened, just something mustered up by the interweb forums, for no good reason :nono: . At least that is what the tech told me as the fuel splashed out of the filler neck on his shoes. They wouldn't fix it under warranty.


I also wonder if the OP is the one selling them on the Amazons............
 

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@ASSFROW has proven me ot be incorrect; there was no TSB recall for this and I apologize; I was recalling that damned , annoying guy that runs Project-JK or now has a site called JK-Way-of-Life?
( I can't recall what it is called...he has a rat-tail and a lifted Renegade if that helps..)

fighting to have his splashing JK fuel filler repalced under wrrnty and I think he got it.
It has been a looong while so forgive my memory failure! ( I am 45yrs old so cut me a little slack?):wink2:
 

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TSB did not include my 07 2 door. It was not a problem, never happened, just something mustered up by the interweb forums, for no good reason :nono: . At least that is what the tech told me as the fuel splashed out of the filler neck on his shoes. They wouldn't fix it under warranty.





I also wonder if the OP is the one selling them on the Amazons............

Same 07 no issue


Sent from AutoGuide.com Free App
 

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Wondering if any of you guys have this part and if it works effectively to fix the problem... regardless of the year of the vehicle. I was/ am suspicious too, of OP's intent but if the part works then I'll just leave this alone... for the greater good, ya know. Anyway... Chime in if you have this part and if it works. Thanks.
 

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@ASSFROW has proven me ot be incorrect; there was no TSB recall for this and I apologize;
There is a service bulletin regarding this subject.
It extends the warranty on the filler pipe to lifetime with no mileage restriction.

Service Bulletin
NUMBER: 14-003-12

This Extended Warranty Bulletin applies to vehicles equipped with a 3.8L
engine (sales code EGT) built between March 1, 2007 (MDH0301XX) and
March 31, 2008 (MDH 0331XX).
 

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Comfortably Numb
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Found this on search Interesting that I remember quite a few issues with the overflow from JKO members. I'm one. NHTSA dropped investigation? Whaaaaaa? Other members have had dealership replace gas tank. No intiendo me.:surprise: LMGTFY
 

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thanks ronjenx ; yeah, I searched around and it seems there is also the same use for the SRT-8 with similar issues and uses this part " TUBE-FUEL MOPAR #CNNNX321AC" that replaces the AB and AA models that preceded it. Seems nothing more than a wider check valve(edit) hose ...
<edit: image snagged from another forum on subject that shows old on right and this part on left>
 

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thanks ronjenx ; yeah, I searched around and it seems there is also the same use for the SRT-8 with similar issues and uses this part " TUBE-FUEL MOPAR #CNNNX321AC" that replaces the AB and AA models that preceded it. Seems nothing more than a wider check valve(edit) hose ...
<edit: image snagged from another forum on subject that shows old on right and this part on left>
The one on the right in your picture has no check valve in it. Originally, there was a check valve in the tank. Ethanol-laden fuel caused the check valve in the tank to swell and become ineffective. When the problem first came about, they were replacing the entire tank. When that got too expensive, they designed a new filler pipe with a check valve in it.
My tank was replaced before the new filler pipe was available. It has the check valve in the tank, which has been functioning perfectly since April 2012.
 

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A JKO DICK
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There is a service bulletin regarding this subject.
It extends the warranty on the filler pipe to lifetime with no mileage restriction.

Service Bulletin
NUMBER: 14-003-12

This Extended Warranty Bulletin applies to vehicles equipped with a 3.8L
engine (sales code EGT) built between March 1, 2007 (MDH0301XX) and
March 31, 2008 (MDH 0331XX).
Thanks for the info. Once it's all back together I'll take it in and give them the Bulletin number. This deserves a six pack.

:beer::beer::beer:
:beer::beer::beer:
 

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The one on the right in your picture has no check valve in it. Originally, there was a check valve in the tank. Ethanol-laden fuel caused the check valve in the tank to swell and become ineffective. When the problem first came about, they were replacing the entire tank. When that got too expensive, they designed a new filler pipe with a check valve in it.
My tank was replaced before the new filler pipe was available. It has the check valve in the tank, which has been functioning perfectly since April 2012.

And right in @ronjenx's third sentence is the reason that non-ehanol fuel is all that's ever been run in my '11s 3.8l tank for its 87k miles .
I think ethanol was solely designed to help farmers and car manufacturers but this isn't the thread to 'go there' . Just saying ...:jeep2:
 

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its ridiculous that they only cover them halfway through '07. i went through the same b.s. over the stall bug. the build date on mine was january 22nd and they only covered from the 23rd up. it took a month of me complaining to get them to fix it.

mine has been puking on fill up since it was less than a year old. It did not do it initially, which makes since with the swelling of the check valve in the tank. I've never tried to get it fixed or get the part. I fill up with the engine running and watch the gauge. Soon as it gets close, I listen. Mine does a little gurgle that is the precursor to puking. If I click it off when I hear that gurgle, no puke. no problem.
 

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its ridiculous that they only cover them halfway through '07. i went through the same b.s. over the stall bug. the build date on mine was january 22nd and they only covered from the 23rd up. it took a month of me complaining to get them to fix it.

mine has been puking on fill up since it was less than a year old. It did not do it initially, which makes since with the swelling of the check valve in the tank. I've never tried to get it fixed or get the part. I fill up with the engine running and watch the gauge. Soon as it gets close, I listen. Mine does a little gurgle that is the precursor to puking. If I click it off when I hear that gurgle, no puke. no problem.
I have an early production '07' (APRIL) JK and installed the new model filler pipe , doe's it work , and is it worth it ?
Hell yes it is ! No more slow fill-ups no more gas soaked shoes , no more fuel running down the rear quarter of the jeep , no more smell of fuel in the cab .
Win all around on this fix , it works .
 
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