Flex seal for gas tank evap leak? - Club4G Forum : Mitsubishi Eclipse 4G Forums - 2006-2012 Eclipse Authority
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Old May 13th, 2020, 09:19 PM   #1 (permalink)
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Name: Kyle
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Flex seal for gas tank evap leak?

So I got around to smoke testing my car today for the P0455 evap leak, I stuck ste smoke machine hose up to the gas tank filler

Instantly saw my evap leak area which is where the filler neck hose and evap lines connect to the gas tank, it appears as though the metal lines are fine even though they are rusty, and they attach to rubber before going to the tank

The issue is the circular lock but things on the top of the tank where they connect I believe as it’s all pretty rusty, it’s hard to tell since you can’t get a good look at it, I tried to use my phones front camera as a mirror to see around up there

Think some putty or flex seal spray might help fix it?
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Old May 14th, 2020, 06:44 AM   #2 (permalink)
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They make products that are fuel rated for that you could try instead.
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Old May 14th, 2020, 07:44 AM   #3 (permalink)
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Quote:
Originally Posted by Sabertooth^2 View Post
They make products that are fuel rated for that you could try instead.
https://www.amazon.com/Permatex-8433.../dp/B00O2ISKYO

This?

Being on top of the tank is less of a concern than if it was on the bottom

Last edited by pcfreak4; May 14th, 2020 at 07:50 AM.
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Old May 14th, 2020, 08:00 AM   #4 (permalink)
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You can give it a try. No idea what it costs since Amazon's update removed prices when viewed from outside the country of sale if they won't ship it to you.

Just be sure to clean the area well, or make it go all the way around. if you can't (essentially making your own tube) and stick it on to somewhere solid. Optimally, you'd remove the old crusty rusted one to do this, or replace it with an aftermarket one
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Old May 14th, 2020, 08:48 AM   #5 (permalink)
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Quote:
Originally Posted by Sabertooth^2 View Post
You can give it a try. No idea what it costs since Amazon's update removed prices when viewed from outside the country of sale if they won't ship it to you.

Just be sure to clean the area well, or make it go all the way around. if you can't (essentially making your own tube) and stick it on to somewhere solid. Optimally, you'd remove the old crusty rusted one to do this, or replace it with an aftermarket one
It’s about $7

I found out after sticking my camera up there and recording the smoke coming out that the hoses are fine, there’s actually a hole on the tank itself right above the connection of the right side evap line that smoke poured out of

Not sure why the bottom of the tank is plastic but the top seems metal? It’s really hard to see up there unfortunately
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Old May 14th, 2020, 09:10 AM   #6 (permalink)
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Ah, for patching the top of a tank, yes, use that putty if you don't want to weld.

Also, that's odd about your tank. Are you sure it's not just an anti corrosion coating you're talking about on the bottom, and no coating on the top?
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