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tacoma refueling problems

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Old 04-08-2012, 09:25 AM   #1
FEARFACT [OP] FEARFACT is offline
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tacoma refueling problems

hi everyone,
this has been over on TTORA for along time, started the previous owner and never resolved now its my deal.
to start its an 03 tacoma double cab 4x4.
problem- while trying to refuel, regardless of the gas station it only lets a small fraction of a gallon in at a time. happened at every gas station from socal to nc and everyone i have been to since in this state.. takes about 20 mins to fill from E. yesterday i finally had a chance to look into it a bit so i pulled the bed and replaced the fuel cutoff valve (as suggested by a TTORA member). i also checked all the lines for kinks and blockages and blew them out with air. no blockages found. after reassembly i went to the gas station and the problems is still there.
the previous owner messed with the VSV when troubleshooting and it did not help.
other forum member suggested disconnecting part of the evap canister/system but i do not know which part to pull.
this is a link to the thread on TTORA if anyone is interested.
http://ttora.com/forum/showthread.php?t=180280
any suggestions or insight would be greatly appreciated. thanks for the help in advance, and if this is better suited in a different section of the site please do as you see fit Mods.
-Matt
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Old 04-08-2012, 09:31 AM   #2
This is my derpawayinator!!!!!
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My only guess would be the check valve/anti siphon valve that's in the bottom of the filler neck. It seems like the valve isn't opening enough to let fuel flow and not fill up the neck. Not 100% sure that your tank has one.

Note: Just a guess.
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Old 04-08-2012, 09:50 AM   #3
This is my derpawayinator!!!!!
NelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shed
 
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Here's a flow chart on how to test the entire evap system.





This one shows the check valve specifically.





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Old 04-08-2012, 11:56 AM   #4
FEARFACT [OP] FEARFACT is offline
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the last owner did some VSV checks i beleive and i replaced a cutoff valve yesterday ( but its not at the neck base so if theres another there then i havent touched it).im not sure if this will cover all those bases but i just fueled up and in the processs i one by one disconnected each vacuum line going into what i assume is the evap cluster.... nothing has helped.... i did completely write off the idea that there could be something in the filler neck down low out of site since i am able to fuel and 2 times since january it just filled like any normal vehicle.. i wonder if theres something in there or could there actually be a problem with the neck somehow...such a dumb ass/irritating little problem!
here that evap cluster if it sheds any light for anyone!

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Old 04-08-2012, 12:00 PM   #5
revised
TrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shed
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Take apart the neck base. Maybe something is stuck in there.
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Old 04-08-2012, 12:17 PM   #6
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yeah seems like the next step..for next weekend since its got a full tank now....ill have to see if i can manage it with out yanking the bed again... dont feel like dealing with that all over if i dont have to
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Old 04-14-2012, 08:05 AM   #7
FEARFACT [OP] FEARFACT is offline
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So if you thought myself, the previous owner and anyone else was over thinking this you were right! Pulled the need off again today then the filler neck and there it was a paper circle tab the size of a dime, I assume from a bottle of injector cleaner, sitting on the screen... I feel like an ass, but we have all had the situations of overlooking the obvious. The times it fueled ok that tab must have been on its side... Owell, I should be all set now..
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Old 04-14-2012, 08:06 AM   #8
This is my derpawayinator!!!!!
NelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shedNelsonTacoma is one of the sharper tools in the shed
 
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Nice! At least you figured it out.
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Old 04-14-2012, 08:59 AM   #9
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TrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shedTrdSurgie is one of the sharper tools in the shed
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Quote:
Originally Posted by FEARFACT View Post
So if you thought myself, the previous owner and anyone else was over thinking this you were right! Pulled the need off again today then the filler neck and there it was a paper circle tab the size of a dime, I assume from a bottle of injector cleaner, sitting on the screen... I feel like an ass, but we have all had the situations of overlooking the obvious. The times it fueled ok that tab must have been on its side... Owell, I should be all set now..
I didn't oner think it. But i did think it was something more malicious than a bottle seal. Lol.

Good job figuring it out!
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