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Slurping liquid sound from rear underside

Discussion in '5th Gen 4Runners (2010+)' started by josephjah, May 22, 2020.

  1. May 22, 2020 at 11:05 PM
    #1
    josephjah

    josephjah [OP] New Member

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    Hello everyone, I’m currently out in the middle of nowhere and noticed that after a long 4+hr drive I parked my 5th gen and got out to hear a loud slurping sound from the underside of the vehicle just before the rear tire on the driver side. It isn’t the normal fuel pump buzz we all hear. And the vehicle is parked facing downwards slightly. Nothing is leaking that I can see.

    The sound stops when the engine is off and resumes when I start it. I’m just afraid it’s a failing fuel pump or some line obstruction or air in the line. Anyone have any guidance?

    The vehicle exhibits no other symptoms and has no loss of power or performance.

    Thanks so much!
     
  2. May 22, 2020 at 11:12 PM
    #2
    mynameistory

    mynameistory New Member

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    The same 4Runner everyone has
    What year? There was a recall for the low pressure pickup pump from 2019 forward I believe.
     
  3. May 23, 2020 at 12:48 AM
    #3
    josephjah

    josephjah [OP] New Member

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    Thanks for the reply, it’s a 2012 Trail. With 90k.
     
  4. May 24, 2020 at 11:22 AM
    #4
    mynameistory

    mynameistory New Member

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    I can't say for sure whether I've noticed the same sound. Sorry I can't be more help. Good luck in finding out!
     
  5. May 24, 2020 at 1:46 PM
    #5
    DRobs

    DRobs New Member

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    Missouri
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    Make sure your gas cap is on tight.
     
  6. May 25, 2020 at 7:25 AM
    #6
    moneypit

    moneypit New Member

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    This has been discussed in depth before. It's part of the emissions system purging fumes from the gas tank after the vehicle has shut down. Usually it happens from 10 minutes to an hour after parked.
     
  7. May 25, 2020 at 8:20 AM
    #7
    Mtbpsych

    Mtbpsych New Member

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    I’ve noticed a weird sound as if water is sizzling/gurgling somewhere in the rear but I only notice it after car washes. Interesting.
     
  8. May 29, 2020 at 11:20 AM
    #8
    Ironguy

    Ironguy New Member

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    Bisbee, AZ
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    There could be a nasty troll under there drinking up your Irish Whiskey:sorry: Just kidding,it does sound like emission system purging.
     

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