About charcoal canister connexion

[ADMUPE]

Hi!!!

I have a problem with my charcoal canister; I have seen that there are 2 connexions, one of there are cutted!!!(the down tube is cutted and is opened to the athmosphere...)

Where is connected this tube???Can you upload a picture of it???

Thank you.

[Mazda_Powered]

its supposed to be vented to the atmosphere the canister filters out the gas fumes and dumps the rest outside.

so everything is ok lol

[ADMUPE]

But is not supossed that the gas is inserted into the engine after filtered?In the workshop manual say it.

Thank you.

[Crazy Drummer69]

There is an in-line fuel filter in the engine bay to the right of the charcoal canister that filters high-pressure fuel leading to the engine.

[ADMUPE]

Correct, my charcoal have those two connexions but there is one more at the low part of the charcoal that have a tube cutted that is opened to atmosphere, is it normal??

[bomdoutscort]

can you take a picture of it where its cut?

[ADMUPE]

In orange, the cutted tube...

[323 mazda]

yes it is suppose to be like that, open.

[ADMUPE]

Thank you, I was worried...How can I be sure that this system is operating??When I open the fuel tank, I can heard "psssss" one or two seconds... (blowing air/gas).

[Dan [Sac]]

If it was faulty it would give you a CEL (check engine light) for the solenoid that operates the system.

The psssht you hear is the gas cap releasing built pressure in the fuel tank - it is supposed to do that and it is working properly. That means the gas cap is not leaking fumes out in the atmosphere. The fumes get filtered through the charcoal canister and after that injected in the intake manifold or vented to the atmosphere, depending on the throttle position and engine temperature.



And if you look at the first diagram that Crazy_Drummer posted you will see that at the bottom of the canister there is that vent tube (that you say is 'cutted') that vents to the atmosphere.

[ADMUPE]

OK, thank you!!!I haven´t seen it!!!Sorry!!!

[Escort92man]

I chime in now, my gas tank in both my EGT's has vacuum built up in the gas tanks, unscrew the gas cap and it goes HHHHHSSSSSSP not PSSSSSHHH. I've unscrewed the cap and smelled and don't smell gas, and then I unscrewed it and watched the gas tank and it settled down into the frame it sits in, so meh idk.

btw my charcoal canisters have both been removed, and still passes emissions with FLYING colors, I just looped the vacuum lines together so it still works just like stock, just no canister in the way, does it harm anything? idk, but I haven't had ANY issues removing it and looping the lines.