2016 Trail Premium Fuel Leak Topside

[Brad88]

Have a 2016 Trail Premium with about 142K miles. My wife filled the tank last night and then first thing this morning when driving to work, she could smell gas. I just finished checking it out and I was underneath with my flashlight and my phone taking videos until I could see it. It appears to be coming from the white cap the fuel pump is under.

It was running out from underneath it and appears to be spraying out of it somewhere as well. Can you get just that cap or do you have to buy the whole fuel pump assembly to rectify it?

I plan to pull the rear seats and pull the carpet back tomorrow after work and check through the access panel inside while my wife starts it to confirm that is where it is coming from.

 

[Brad88]

Update:

Turns out the return line right at the fuel pump was leaking. Right now I suspect mice due to there being what looks like 2 separate spots about half an inch apart and one was the actual hole in the line, the other wasn't all the way through yet.

I bought both lines form my local Toyota and changed them both out since the 4Runner is almost 10 years old now and over 140K miles. Fairly easy to do, but had to drop the tank about 10" in order to lift the metal plate off the top so I could pull the lines off the buolt in holders on the top side of the tank. And then it had quick disconnect ends towards the front and the fuel pump side had a yellow connector that wasnt too bad to pull and they came right out.