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Gas Cap Troubles

Discussion in '2nd Gen. Tacomas (2005-2015)' started by SurviveToRide, Jan 18, 2020.

  1. Jan 18, 2020 at 8:22 AM
    #1
    SurviveToRide

    SurviveToRide [OP] Lover of anything on wheels

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    Well it has black badges...
    Hey TW! I’ve been seeing some strange issues with my gas cap. Firstly, I got a EVAP test done, and it turned out there was a huge leak. Well, we fogged the system and sure enough the smoke came pouring out of the gas cap! The thing is, a leak of this magnitude should have set off a Check engine light, but no codes ever showed up. Does anyone know why the CEL wouldn’t come on?
    Well, after I found out it was bad I did the normal thing and went to O’Reilly to get a new gas cap. Told the guy behind the counter all the information, watched him plug it in correctly, and their computer pulled up a million caps, THAT DIDNT FIT THE TRUCK! So I was there for a while and eventually gave up and went to NAPA. However, I had the exact same issue there. So now I know it’s not just a bug in one of their systems, it’s gotta be a problem with Toyota maybe? Why wouldn’t the right cap pull up? So anyways I went to Amazon and ordered it from there, installed it, and actually saw an improvement in gas mileage!
     
    DG92071 likes this.
  2. Jan 18, 2020 at 8:25 AM
    #2
    ppham444

    ppham444 Well-Known Member

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    Yeah, I've had the EVAP code before. All I need to do is retighten the gas cap. It's pretty sensitive.
     
  3. Jan 18, 2020 at 8:29 AM
    #3
    SurviveToRide

    SurviveToRide [OP] Lover of anything on wheels

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    Well it has black badges...
    I just found it really strange that I didn’t get a code when it was leaking that bad. And I did try and loosen and re-tighten it a few times, that didn’t fix the issue for me.
     
    DG92071 likes this.
  4. Jan 18, 2020 at 9:27 AM
    #4
    Black DOG Lila

    Black DOG Lila Well-Known Member

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    Stock. EZ pass.Dump pass.Inspection sticker.Convict printed lic.plates.FG cap.
    It takes several driving cycles under certain conditions to throw an EVAP code. The gas cap seat on the filler neck is often overlooked. Keep the seat polished and apply vasoline to it. I've seen the seat chew up new gas cap O rings.
     
    JGO and SurviveToRide [OP] like this.
  5. Jan 18, 2020 at 9:31 AM
    #5
    BillsSR5

    BillsSR5 Well-Known Member

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  6. Jan 18, 2020 at 9:48 AM
    #6
    gotoman1969

    gotoman1969 Well-Known Member

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    San Antonio, TX United States
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    Toyota’s fault Napa, autozone etc don’t have the correct gas cap?
     
    4xdog likes this.
  7. Jan 18, 2020 at 10:09 AM
    #7
    EdgemanVA

    EdgemanVA Well-Known Member

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    I bought my OEM replacement gas cap from Amazon.
     
  8. Jan 18, 2020 at 10:31 AM
    #8
    SurviveToRide

    SurviveToRide [OP] Lover of anything on wheels

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    Well it has black badges...
    Not necessarily saying it’s their fault but maybe an issue with part numbers or something. It’s just too strange two auto parts stores couldn’t find it.
     
  9. Jan 19, 2020 at 3:08 AM
    #9
    Larzzzz

    Larzzzz Grande' Ricardo

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    Aux back up lights, Bed lights, Re-located trailer plug, Good dooby, a.k.a. jumper cable mod, Heated seats, back up camera,
    I had a similar experience with e brake cables. The book had different PNs for the passenger side, but just 1 for the drivers side. And of course it was too short for a dclb...
     

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