2004 LX470
Getting strong fuel/gas vapor smell when parked.
I sealed to test, but would like to confirm this is a part failure and not a design feature.
Thanks in Advance!
Smoke test gas filler neck leak
- Thread starter whereditgo
- Start date
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2004 LX470
Getting strong fuel/gas vapor smell when parked.
I sealed to test, but would like to confirm this is a part failure and not a design feature.
Thanks in Advance!
- Thread starter
- #2
Video here:
i dont know the answer, but your truck isnt rusty, so that may be a vent that is supposed to be there ???
I’m in a similar boat right now with my 03 LC100 (92K ODO). I was getting EVAP DTCs and changed the purge valve and vacuum valves, at the recommendation of a Toyota service center that said they smoke tested and saw no leaks- they obviously got it wrong, because when I smoked tested (using a gas cap plug) - I had leaks coming the rim of where the gas cap gasket meets the filler neck (common) but also seeing smoke coming from behind, the gas cap area.
How did you get access to that view? Remove the wheel well plastic and mud flap?
I’m certain the EVAP system is closed, meaning there should be no leaking or venting, especially from the gas filler next.
- Thread starter
- #5
My solution....
Seams on fuel tank were curled up when installed. Trapped road salt and dirt, bad corrosion. Replaced tank with good used genuine LX470 tank. All good.
Also, yes. Unfastened inner wheel liner and folded back.
Seams on fuel tank were curled up when installed. Trapped road salt and dirt, bad corrosion. Replaced tank with good used genuine LX470 tank. All good.
Also, yes. Unfastened inner wheel liner and folded back.
Props for using a smoke machine to eliminate guessing 
Thanks for the update - so it was not the pipe at all? Do you have any photos of the seams you are referring to? Any particular corner or edge of the tank to look at? When you smoke tested again, could you see the smoke coming from the seams? (assuming you had less than half a tank filled). Lastly, were you receiving the EVAP error codes?
Once it warms up here in New England, I will smoke test again, with the inner liner removed to check my tank and pipe as you have.
BTW - when the tank was replaced, did you have to work from the cabin at all, or what all was performed from the bottom?