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Is there supposed to be a fuel flap?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Grayson73, Jul 31, 2015.

  1. Grayson73

    Grayson73 Junior Member

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    My check engine light has been coming on and I've been re-tightening the gas cap; sometimes it works and sometimes it doesn't.

    I noticed that when I look at the hole, there is no flap to block the hole. Is there supposed to be a flap that blocks the hole until you insert the gas nozzle when filling gas?
     
    #1 Grayson73, Jul 31, 2015
  2. bisco

    bisco cookie crumbler

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    maybe.
     
    #2 bisco, Jul 31, 2015
  3. Sergiospl

    Sergiospl Senior Member

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    Inside of the cap blocks the hole!
     
    #3 Sergiospl, Jul 31, 2015
  4. bisco

    bisco cookie crumbler

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    might need a new cap?
     
    #4 bisco, Jul 31, 2015
  5. Grayson73

    Grayson73 Junior Member

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    Possibly. How does a cap break?!?
     
    #5 Grayson73, Jul 31, 2015
  6. Sergiospl

    Sergiospl Senior Member

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    #6 Sergiospl, Jul 31, 2015
  7. The Electric Me

    The Electric Me Go Speed Go!

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    This is no answer, but I know what you mean.
    I live in Oregon where gas is not self serve.

    But my Honda Fit had a gas "flap" just inside the opening after removing the cap. It was spring loaded. I know this because of times I added a treatment of Techron to the tank. I had to be sure to push the "nozzle" of the bottle past the spring loaded flap.

    I've ran a treatment or two of techron through the Prius but for the life of me, can't remember if a similar flap exists.

    I'd just make a quick stop at the dealership, because you either need a new flap...or a new gas cap. So either way the trip wouldn't be waste.

    Edit: Just saw above posted picture. So I guess you need a new gas cap.
     
    #7 The Electric Me, Jul 31, 2015
  8. RRxing

    RRxing Senior Member

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    No flap on Gen III.
     
    #8 RRxing, Jul 31, 2015
  9. bisco

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    if it is broken, i can only think there is some type of rubber seal.
     
    #9 bisco, Jul 31, 2015
  10. Melchior

    Melchior Junior Member

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    Mine has no flap. It surprised me when I first filled up because all the other fuel injected cars I've ever owned have had a flap. Only owned one carb'd car, have had a few diesels and none of them had a flap; assumed it was a vapour emissions thing. I much prefer it without one, means you can really properly brim it.
     
    #10 Melchior, Jul 31, 2015
  11. bisco

    bisco cookie crumbler

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    you can't brim it here, because we got the blatter.
     
    #11 bisco, Jul 31, 2015
  12. Patrick Wong

    Patrick Wong DIY Enthusiast

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    No.

    Check the condition of the O-ring which seals the fuel cap.
     
    #12 Patrick Wong, Jul 31, 2015
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