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Barrpete's Avatar
 
Join Date: Mar 2005
Location: Tucson
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Fuel overflow tank

Had a horrible fuel smell in the garage and found fuel dripping from beneath the left fron fender. Thinking that the lines to the fuel overflow tank were bad or the tank itself had failed I pulled it out but everything seems to be fine with the exception of a fitting on the tank with nothing attached. Anyone know what is supposed to be connected here?

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1986 Carrera Coupe
1999 Chevy Tahoe
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"A little knowledge is a dangerous thing"
Old 12-04-2019, 09:00 AM
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If i remember correctly there is a metal tab/bracket in the fender well that that fitting slides into to help support the tank.
Old 12-04-2019, 01:11 PM
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That is a fuel expansion tank. I believe that hole is where the fuel vents to the atmosphere.

If you overfill your tank, the fuel drips straight down to the floor. Mine does.

Last edited by mo-mon; 12-05-2019 at 01:58 AM..
Old 12-05-2019, 01:55 AM
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76FJ55, I don't think it fits into a bracket. The fitting is on top of the tank and wasn't connected to anything when I took it out.

mo-mon that's exactly the problem I'm having, although I've owned this car for 15 years and never had this happen before. I guess while I have everything torn apart I might as well replace the fuel lines. Could be cracks that aren't visible that are leaking,

Thanks for the replies.
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1986 Carrera Coupe
1999 Chevy Tahoe
1987 Chevy Blazer
1955 Chevy Apache 3100 Pickup

"A little knowledge is a dangerous thing"
Old 12-05-2019, 06:25 AM
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That's fond- just deglaze
 
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Hi Barrpete- The fitting you have shown fits into a u-shaped metal bracket that holds the tank in place above the washer tank. I have a few shots from my removal... Weak Washer system solved! (Mold) It's actually a clever way to keep the upper portion of the expansion tank in place- just look for/feel for the u-shaped clip in the upper portion of the wheel well.
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Last edited by Missed Approach; 12-05-2019 at 12:08 PM..
Old 12-05-2019, 11:58 AM
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Missed Approach, great write up. I must have missed it in my searches because its mainly about the washer tank, but your writeup covers both - thanks!
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1986 Carrera Coupe
1999 Chevy Tahoe
1987 Chevy Blazer
1955 Chevy Apache 3100 Pickup

"A little knowledge is a dangerous thing"
Old 12-05-2019, 12:23 PM
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That's fond- just deglaze
 
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Hi Barrpete- Thanks for the kind words! I still can't fathom how all the road debris made it behind my vapor tank.
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Petra- 1986 Coupe

Last edited by Missed Approach; 12-05-2019 at 07:29 PM..
Old 12-05-2019, 01:18 PM
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Ha! I think my car will be about 20 lbs lighter after all the dirt that come out of there!
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1986 Carrera Coupe
1999 Chevy Tahoe
1987 Chevy Blazer
1955 Chevy Apache 3100 Pickup

"A little knowledge is a dangerous thing"
Old 12-06-2019, 05:56 AM
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Can anyone confirm the size of the fuel lines? It looks like the smaller line is 4x1.5 mm and the larger one is 9x2.5 mm. Pelican doesn't seem to carry either of these sizes, anyone know where to source them?
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1986 Carrera Coupe
1999 Chevy Tahoe
1987 Chevy Blazer
1955 Chevy Apache 3100 Pickup

"A little knowledge is a dangerous thing"
Old 12-06-2019, 09:42 AM
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That's fond- just deglaze
 
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Hi Barrpete- I recently replaced some of the lines (which are 9x2.5mm).

Here's a a bit of my story...

Expansion Tank Fuel Smell Quandary...
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Old 12-06-2019, 10:01 AM
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That's fond- just deglaze
 
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Hi Barrpete- One update- Hose #13 on your tank is a smaller diameter- It's a 4 X 2.5 under Part #N0203612...




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Petra- 1986 Coupe
Old 12-06-2019, 10:16 AM
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