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What is this thing plumbed into the fuel system

Featured Replies

Wondering what this little device with two hoses is. It's on the driver's side where the fuel lines go into the cabin floor. It has two hard lines that run over to the fuel pump. Can't really tell where they are going as the car was so much under coat.

20200929_113350.jpg

20200929_113404.jpg

Nothing I recognize. Spring clamps suggest it's in the vent line.

What vehicle is this?

  • Author
On 9/29/2020 at 8:03 PM, naru2 said:

It is the 2 way valve.

What dose it do?

It controls vacuum and pressure  in the tank.

  • Author
6 hours ago, naru2 said:

It controls vacuum and pressure  in the tank.

That's what I thought. I've been having an issue where the tank will have a ton of pressure in it when I go to fuel up. Like its hard to loosen the cap, and takes 10+ seconds to vent. It also soaks my hand in gas as it vents.

It should hold SOME pressure.Can`t find a spec,but,I think it should be under 2 psi.

Might be worth checking that the line to the cannister is not blocked.

Found a spec.

2 way valve  relieves pressure above 0.5 psi+/- 0.2psi.

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