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Weird fuel leak #5269169 11/16/19 01:02 PM
Joined: Jan 2007
Posts: 1,184
BeerCan Offline OP
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So i went to Costco today and when I came out and got near my truck I smelled diesel fuel. Looked on the ground and there was a big puddle and very active drip.

I recently changed the filter so I assumed it was that, looked under the truck and it was nowhere near the filter housing. it was coming from somewhere up high near the back of the tank but before the fuel filler.

I decided to get it home and look further. Get home, no leak. I can see the wetness of where it was coming from but did not dig to deep. Ran a few more errands, about 20 miles worth and still no leak.

It was a very active leak with a steady drip and a big puddle. Truck was level, tank was 3/4 and filled about 5 days ago. I have a Titan tank but it was installed 50k miles ago and never had any issues like this. I don't want to drop the tank if I don't have to but I also don't want a fuel leak to pop up when I am on the road. It's the F250 6.7 PS in my sig.

Anyone ever experience this?


2020 Porsche Cayenne
2017 Ford F250 6.7 PS
2016 Ford F150 3.5 EB
2016 Porsche 981 GTS
2015 Ford Mustang 2.3 EB
My car list is getting long smile
1994 Porsche 968 Coupe
1987 Porsche 944 Turbo
Re: Weird fuel leak [Re: BeerCan] #5269175 11/16/19 01:33 PM
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Blkstanger Offline
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I have heard of sending units leaking and fuel pools on top of the tank. A sudden stop will slosh the pooled fuel out of the recess. Im not sure how the Titan tank is designed compared to stock.


99 Jeep WJ 4.7 200,000mi. Maxlife 10w30, Fram Ultra.
15 Ford Escape S 2.5 Castrol Edge EP 5w30 Fram Ultra.
Re: Weird fuel leak [Re: BeerCan] #5269195 11/16/19 01:46 PM
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Warstud Offline
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Re: Weird fuel leak [Re: Warstud] #5269198 11/16/19 01:49 PM
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mattd Online Content
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That is for 2017 cab and chassis only.

OP check the vent lines on top of the tank.

Last edited by mattd; 11/16/19 01:50 PM.

2007 Ford F-350 4x4 6.0 PSD

ASE Master, L1, L2
Re: Weird fuel leak [Re: BeerCan] #5269202 11/16/19 01:53 PM
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Chris Meutsch Offline
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Could the filter be restrictive in some way?


2005 Honda CR-V EX, 280k
Re: Weird fuel leak [Re: BeerCan] #5269454 11/16/19 08:00 PM
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clinebarger Offline
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If you have a aftermarket tank....I would look there first!


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
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Re: Weird fuel leak [Re: BeerCan] #5269483 11/16/19 08:53 PM
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Rand Offline
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looks like titan tanks have been known to have some leaks.


2019 Jeep Cherokee Trailhawk 2.0T
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Re: Weird fuel leak [Re: Rand] #5269505 11/16/19 09:16 PM
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BeerCan Offline OP
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Originally Posted by Rand
looks like titan tanks have been known to have some leaks.

Version 1 had leaks at the gasket on top of not installed correctly. It would leak when full and let water in

I have version 2. It has over 50,000 miles on it so I am pretty sure it's not that gasket.

Leak has not been back, I used the truck for another 30 miles after I posted this. It's just weird


2020 Porsche Cayenne
2017 Ford F250 6.7 PS
2016 Ford F150 3.5 EB
2016 Porsche 981 GTS
2015 Ford Mustang 2.3 EB
My car list is getting long smile
1994 Porsche 968 Coupe
1987 Porsche 944 Turbo
Re: Weird fuel leak [Re: BeerCan] #5270860 11/18/19 01:32 PM
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BeerCan Offline OP
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So well over 300 miles on the truck now since I first saw the leak and no sign of it coming back. I guess I am going to have to dig around on the top of the tank and see what is going on.

Still I can't believe with how big that leak was that it is not back.


2020 Porsche Cayenne
2017 Ford F250 6.7 PS
2016 Ford F150 3.5 EB
2016 Porsche 981 GTS
2015 Ford Mustang 2.3 EB
My car list is getting long smile
1994 Porsche 968 Coupe
1987 Porsche 944 Turbo
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