1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Gas tank roll-over valve stuck causes hard fuelling - anyone else?

Discussion in '2.5 Gen Tundras (2014-2021)' started by baguafan, Mar 20, 2019.

  1. May 16, 2021 at 5:11 PM
    #61
    Vizsla

    Vizsla New Member

    Joined:
    Jul 14, 2016
    Member:
    #3867
    Messages:
    2,157
    Gender:
    Male
    First Name:
    Dave
    Arizona
    Vehicle:
    2018 Cement Crewmax
    Hard off-road use seems to increase the odds, on one trip we were at a big sand dune with some whoops leading up to it, and believe 3 had it stick after playing. Mixed results some un-stuck on their own. Not uncommon, trucks get used really hard here, but seen it occur on trucks not used hard. Would be no issue for me to have covered under warranty, but it’s really easy for a dealer to say no due to mods/abuse, the rollover valve is obviously poorly designed on the 38 gallon tank.


    Have no idea, but maybe it is designed to stay closed in a rollover?
     
    joonbug and 831Tun like this.
  2. May 17, 2021 at 12:21 PM
    #62
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

    Joined:
    Dec 31, 2020
    Member:
    #56879
    Messages:
    2,081
    Gender:
    Male
    First Name:
    Dan
    Vehicle:
    2021 White 4x4 CM Trail Ed.
    Seat covers, dash mat, ext. Trans. Cooler, sumo springs, oem pwr fld tow mirrors
    Is it not possible to drop the tank, remove the fuel pump, strainer, and sending unit assembly, then reach in and "fix" the check valve? If not, can one cut off the neck, leaving only a short 2" or so and "fix" the valve, then mend the neck back together with hose and clamps over the newly cut ends? Just curious what has been attempted.
     
    831Tun likes this.
  3. May 17, 2021 at 12:29 PM
    #63
    Tundrastruck91

    Tundrastruck91 New Member

    Joined:
    Feb 13, 2021
    Member:
    #59054
    Messages:
    145
    Gender:
    Male
    Vehicle:
    2016 Silver Platinum 4x4 (InB4pcs/tss..BS)
    +1 on my 16 but weirdly the dealer couldn't replicate.


    edit: I can still fill by backing pump out and on slowest filling click but still bothersome. Do the replaced tanks still end up having problems ?
     
    831Tun likes this.
  4. May 17, 2021 at 4:14 PM
    #64
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    Not that I've heard of
     
  5. May 17, 2021 at 4:18 PM
    #65
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    I don't think that's possible. The valve is about 7" down inside the tank and pretty inaccessible.
     
    GodlessPro and joonbug like this.
  6. May 28, 2021 at 1:47 PM
    #66
    Skolberg

    Skolberg New Member

    Joined:
    Apr 28, 2021
    Member:
    #62420
    Messages:
    7
    Gender:
    Male
    First Name:
    Chase
    Vehicle:
    2014 SSM Platinum CM
    I am having this exact same issue on my 2014 that I just bought two months ago. Not to mention I didn't buy it at a Toyota dealership so I doubt any warranty claim is in my future for the valve but is worth a phone call since it is such a common problem. Not to mention what a PITA it is to fill the tank. Of course the Honda dealer I bought it from gave it to me with a full tank as "courtesy" for my 200 mile drive home, how convenient! LOL
     
    831Tun likes this.
  7. May 28, 2021 at 2:23 PM
    #67
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    Your '14 should have the 26 gal. tank??? I've never heard of issues with the 26. We need pics of the tank under the truck unless you know what size it is. I have run across a case where someone was swapping a 38 into a truck that originally had a 26. The valve on the tank they'd bought used was stuck and they luckily caught it before install.
     
    GodlessPro and joonbug like this.
  8. Jun 28, 2021 at 2:14 PM
    #68
    Skolberg

    Skolberg New Member

    Joined:
    Apr 28, 2021
    Member:
    #62420
    Messages:
    7
    Gender:
    Male
    First Name:
    Chase
    Vehicle:
    2014 SSM Platinum CM
    Sorry for the super late reply I have been busy renovating my new home and trying to get moved in so the Tundra has gotten no love or attention. I have the 23 Gal tank but I'm almost sure this has to be my issue with filling... I can get pics this evening if its helpful. Its starting to drive me crazy to the point I'm considering going back to the dealer (Not Toyota) and making a stink to have them foot the cost of a new tank..
     
    831Tun likes this.
  9. Jun 28, 2021 at 8:31 PM
    #69
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    Could also be the Evap can. :notsure:
     
    GodlessPro and joonbug like this.
  10. Jun 28, 2021 at 9:27 PM
    #70
    Cruzer

    Cruzer Wheeling Full Size

    Joined:
    Oct 12, 2020
    Member:
    #53461
    Messages:
    777
    Gender:
    Male
    First Name:
    Cruz
    Sunnyvale, CA
    Vehicle:
    Build Page: Cruzer's Re-Build for the Rubicon
    I rolled my truck onto the driver side and had no problems filling up once I was right side up :notsure:
     
  11. Jun 30, 2021 at 9:44 AM
    #71
    Skolberg

    Skolberg New Member

    Joined:
    Apr 28, 2021
    Member:
    #62420
    Messages:
    7
    Gender:
    Male
    First Name:
    Chase
    Vehicle:
    2014 SSM Platinum CM
    Any advice on how to determine if it is the evap canister? I believe that is also a pricy item isn't it? $700-800?
     
  12. Jun 30, 2021 at 9:57 AM
    #72
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    Sorry, I don't know how to be sure which is causing the problem. I haven't heard of many/ evap cannisters failing. But I haven't heard of any issues with the rollover valve on the small tank either. Really, the best way I know of is to drop the tank and visually inspect the roll over valve. Hopefully someone else has a better option.
     
    GodlessPro and joonbug like this.
  13. Sep 19, 2021 at 3:47 PM
    #73
    zeekevin

    zeekevin New Member

    Joined:
    Aug 16, 2019
    Member:
    #34747
    Messages:
    86
    Does anybody have a picture of the roll over valve
     
  14. Sep 19, 2021 at 4:58 PM
    #74
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    This is what it looks like when stuck closed.
    upload_2021-9-19_16-57-14.jpg
     
    InfernoPRO and joonbug like this.
  15. Sep 20, 2021 at 5:29 PM
    #75
    zeekevin

    zeekevin New Member

    Joined:
    Aug 16, 2019
    Member:
    #34747
    Messages:
    86
    mine looks like this. I tried poking at it and I can hear it move. But I still can not get gas to fill properly.
    2DA5B99E-F55C-4586-B277-C425C65BDB63.jpg
     
  16. Sep 20, 2021 at 7:10 PM
    #76
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    Yep, it's closed. I dropped my tank to pop it open.
     
    joonbug, GodlessPro and zeekevin like this.
  17. Sep 21, 2021 at 9:18 AM
    #77
    zeekevin

    zeekevin New Member

    Joined:
    Aug 16, 2019
    Member:
    #34747
    Messages:
    86
    thanks for confirming, I didn’t drop mine to test it, I disconnected the filler neck and stuck a metal hanger to see if it would move. And it did move freely but I still can’t pump gas, I’m thinking of just jamming it open now.
     
    831Tun likes this.
  18. Sep 21, 2021 at 9:21 AM
    #78
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    I can't recommend doing that because it'd effectively delete a safety feature on your truck. However, that's precisely what I did to mine.:rofl:
     
  19. Sep 21, 2021 at 10:33 AM
    #79
    zeekevin

    zeekevin New Member

    Joined:
    Aug 16, 2019
    Member:
    #34747
    Messages:
    86
    i will eventually replace the gas tank. Thanks for the help
     
    831Tun likes this.
  20. Oct 12, 2021 at 5:07 AM
    #80
    Tracker

    Tracker New Member

    Joined:
    Jan 11, 2016
    Member:
    #2424
    Messages:
    1,664
    Gender:
    Male
    First Name:
    Shane
    Colorado, Denver Burbs
    Vehicle:
    2016 Silver Tundra SR5 Lifted
    Pro Comp Lift, towing mirrors, Fuel rims, Toyo A/T, Nav, Viper remote start
    What if you used a metal wire feed reel? It has some flex and goes a long way.
     
    831Tun likes this.
  21. Oct 12, 2021 at 7:27 AM
    #81
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    You'd have to get in past the anti-siphon "bullseye." The end of your "snake" would have to be about 1/8"x1/8"x7+". One trick I recently heard of and saw attempted unsuccessfully is to leave the tank in place, disconnect the fill line at the tank and use a skinny screwdriver to pop the valve open. I think the attempt I witnessed (on @GodlessPro tank in Baja) failed 'cause we needed a better tool for popping open the valve.
     
    GodlessPro and joonbug like this.
  22. Oct 12, 2021 at 8:01 AM
    #82
    GodlessPro

    GodlessPro Bougie BASTRD

    Joined:
    Oct 14, 2016
    Member:
    #4867
    Messages:
    2,420
    Gender:
    Male
    First Name:
    Matthew
    NorCal
    Vehicle:
    2018 Cement CM Limited
    I might give it another shot with the tank in place before I drop it.
     
    sr5shark, 831Tun and joonbug like this.
  23. Oct 12, 2021 at 8:11 AM
    #83
    joonbug

    joonbug bacon

    Joined:
    Oct 13, 2015
    Member:
    #1948
    Messages:
    16,156
    Gender:
    Male
    First Name:
    Joon
    NorCal - Dublin
    Vehicle:
    2020 Limited DoubleCab
    Let me know if you need help. @Shelbie67 has a couple of days off and I can text him for you.
     
    sr5shark, GodlessPro and 831Tun like this.
  24. Oct 12, 2021 at 8:30 AM
    #84
    GodlessPro

    GodlessPro Bougie BASTRD

    Joined:
    Oct 14, 2016
    Member:
    #4867
    Messages:
    2,420
    Gender:
    Male
    First Name:
    Matthew
    NorCal
    Vehicle:
    2018 Cement CM Limited
    :rofl:
    Will do, thanks.
     
    sr5shark, joonbug and 831Tun like this.
  25. Oct 12, 2021 at 9:18 AM
    #85
    Kfrog

    Kfrog New Member

    Joined:
    Jul 14, 2021
    Member:
    #65562
    Messages:
    46
    Gender:
    Male
    Vehicle:
    2016 Tundra SR-5
    I had the same problem a few months back and removed the tank with no access to valve, Toyota wants you to change the entire tank that will costs about 2.5k to include labor. I did a bypass by taking a 3/32 all thread cutting a 6" piece off. I then installed 2 nuts on top and locked them together so I would have a connection for a ratchet and ran it down that center ring of that screen you see pictured in 831Tun's posted photo. The ring holds it in position and will open that flap valve enough to prevent it from totally closing and becoming stuck. This will allow the valve to work as designed to prevent air from escaping carrying fuel particles into the atmosphere due to column of fuel going down fill pipe with air being displaced discharging thru carbon canister that cleans air removing fuel vapors. You can save a lot of trouble by removing fill line at top of tank and accessing from under truck bed. You do not need to remove tank. This valve is not a roll over protector as fuel will run out thru the fuel carbon canaster if the truck should be turned over, just designed to prevent vapor from escaping when refueling. When refueling you start filling slowly to allow this valve to open then increase to maximum flow of pump, it works.
     
    joonbug and 831Tun like this.
  26. Oct 12, 2021 at 9:27 AM
    #86
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    Not a r
    Not a roll over valve? That's an eye opening revelation. I like this solution because I do have an intermittent issue with back pressure spilling fuel out the top on fill up. I'm not clear on what exactly keep the threaded rod from becoming dislodged. Does it thread into the anti-siphon ring?
     
    joonbug likes this.
  27. Oct 12, 2021 at 9:46 AM
    #87
    Kfrog

    Kfrog New Member

    Joined:
    Jul 14, 2021
    Member:
    #65562
    Messages:
    46
    Gender:
    Male
    Vehicle:
    2016 Tundra SR-5
    Yes, the rod will cut threads in that round hole in screen holding rod in place. You talk about fuel backing out of fill pipe, you need to start filling slowly giving valve time to open then gradually increasing flow rate. I'm talking maybe 10 seconds or so, then you can open to about max of pump.
     
    831Tun likes this.
  28. Oct 12, 2021 at 10:25 AM
    #88
    831Tun

    831Tun crazy Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,006
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC LT w/ king 2.5 C/O and bypass, ADS bypass rear, Toytech shackles, TRD dual exhaust dumped, KM3 37s on Method standard +18. N_Fab front bumper, Westin rear w/ hitch relocate, RCI skids, Desert Eagle tranny skid, All Pro sliders, ARB dual compressor, 5.29 gears and ARB rear locker
    I'll try that but my valve is permanently open/non functional.
     
    joonbug likes this.
  29. Oct 12, 2021 at 6:08 PM
    #89
    Kfrog

    Kfrog New Member

    Joined:
    Jul 14, 2021
    Member:
    #65562
    Messages:
    46
    Gender:
    Male
    Vehicle:
    2016 Tundra SR-5
    Do you know if valve is fully opened or partially and is it stuck in position or moves when fueling? Another item you can check is the carbon canister to determine if it is clogged that will cause displaced air to back up thru fill tube causing pump to trip. The problem I was speaking of was the valve being stuck closed.
     
  30. Oct 12, 2021 at 6:40 PM
    #90
    Ct. Rich

    Ct. Rich New Member

    Joined:
    Oct 7, 2019
    Member:
    #37120
    Messages:
    12
    Gender:
    Male
    What is “3/32 all thread”? I’ve never heard of that size? Did you use 3mm threaded rod?
     

Products Discussed in

To Top