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Old 07-10-2023, 04:13 PM #16
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Originally Posted by skyfarm1000 View Post
Did you ever figure out if this noise was normal or not?

I just purchased a 2016 4runner a week ago and noticed a rapid bubbling/boiling sound coming from the gas tank.
Normal.
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Old 07-10-2023, 10:57 PM #17
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Quote:
Originally Posted by skyfarm1000 View Post
Did you ever figure out if this noise was normal or not?

I just purchased a 2016 4runner a week ago and noticed a rapid bubbling/boiling sound coming from the gas tank.
All modern cars recirculate the gas, i.e. pump the gas to the engine compartment, then any extra not needed goes back to the gas tank. Thus the gas returning to the gas tank can make a gurgling, bubbling noise. Completely normal.

(Gas is recirculated to prevent vapor lock).
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Old 07-11-2023, 12:15 AM #18
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Quote:
Originally Posted by skyfarm1000 View Post
Did you ever figure out if this noise was normal or not?

I just purchased a 2016 4runner a week ago and noticed a rapid bubbling/boiling sound coming from the gas tank.
In my case, skid plate was amplifying the sound and that is when I start hearing. I have added two small pieces of rubber between skid plate and gas tank so they are not touching directly and I no longer can hear the pump when I am next to the truck. I have also put over 20k miles on the truck since my original post with no issues, so at this point I am 99% sure that sound is normal.
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