bump.. i want to do that too... so what happens to it???

 

trying to find out, looking for someone else thats a lil bit ahead of me or already finished the install or removal.

Matt S.

 

I want to remove mine I've done the vacuum hose reduction i just wasn't sure if it was needed... is it?

 

Has anyone found this in the service manual? I just got finished looking and couldn't find it. Or if someone knows how and what its routed into please post.

 

No kidding man, I think Omar(adrenaline_vr4) has gotten rid of his charcoal cylinder, but im not sure, he lives in houston too, so ill give him a call tomarrow and talk to him, ill definetely know by monday whats up. But if anyone else knows what to do with the 3 empty vacuum lines that run to the char. cylinder after its been removed, let me know.

Matt

 

interested. just got new dejontool intake runners so I am curious.
=Steve

 

Whats does the intake runners have to do with the charcoal can?
What the hell does the charcoal can do anyways, think its something with fuel or emissions?

 

Ok, there is only one line of any importance in removing the charcoal cannister. Since many of you have already removed the point where the cannister hooks into the front turbo intake hose (Dejon tool pipes w/o that nipple), you need to concern yourself with the small metal tube that runs along the passenger's side of the unibody, exiting just under the fuse box.

This line runs straight to the GAS TANK, and if left uncovered may expel fuel vapor into the engine compartment. While it most likely won't collect in combustible concentrations, it's not a good smell to have in your engine bay. You can put a rubber hose on it and pipe it to the outside world through the fenderwell or the front bumper. Those who are more ambitious can find the hose at the source (the gas tank) and hang a rubber vapor hose off the rear of the car somewhere (remember to include the little blue two-way valve).

Finally, DO NOT just cap this vent hose. Vapor pressure will build up in your gas tank which can be dangerous for many reasons (the vapor is explosive even when not under pressure, allowing to reach full vapor pressure of 5-15psi would be much worse). On a funny note, if you allow substantial pressure build-up in the gas tank and disconnect a fuel hose, fuel will just keep running and running and running out of that hose until the pressure is relieved. It will practically drain your tank, even if the fuel hose is ABOVE tank level (I've seen this happen before).

-Chris

 

So would you recomend removing it or just leave it as is?

 

After reading what you've said I started thinking about what has happened several times at the gas station. When I unscrew the gas cap a lot of pressure releases from the cap, this never happened on my N/A and I have no idea why it happens.

 

OMG, same here, well not anymore the silver car is wrecked. Thats def. the culprit

 

Did you guys cap this line? Bet it is your culprit; a rush OUT when opening the gas cap is the first symptom.

Redline... I don't follow. Didn't I just recommend piping the gasoline vapors out of your engine bay? EXTEND it or disconnect it at the tank and EXTEND that (to fresh air).

-Chris

 

I haven't touched my charcoal canister, i'll inspect it and take some pics. What should I check for? The only thing I have done to that area was the vac reduction, unless something has become kinked and building pressure.

 

interested. just got new dejontool intake runners so I am curious.
=Steve

Same here

 

My front and rear turbo intake runners from dejon tool include the tube for the charcoal on the front runner, and the rear has the air nipple on it. If the line from the charcoal can leaks fuel pressure, and vents gas vapor, why was it running through the intake pipe for the front turbo? The doesnt make much sense to me, I would think you would want nothing but fresh air into the turbo and engine, and let the fuel rails/injectors handle the fuel part. But w/e, so that takes care of the big line that connects to the hardline on the passenger side uni-body, what about the other two lines now?

Matt

 

My front and rear turbo intake runners from dejon tool include the tube for the charcoal on the front runner, and the rear has the air nipple on it. If the line from the charcoal can leaks fuel pressure, and vents gas vapor, why was it running through the intake pipe for the front turbo? The doesnt make much sense to me, I would think you would want nothing but fresh air into the turbo and engine, and let the fuel rails/injectors handle the fuel part. But w/e, so that takes care of the big line that connects to the hardline on the passenger side uni-body, what about the other two lines now?

Matt

Gasoline vapor is considered a pollutant. The charcoal cannister stores the vapor in activated charcoal, and purges it THROUGH the engine when the engine is on under certain conditions (idle I think). The "cleanest" way to get rid of it in a car is to burn it and run the exhaust through a few catalysts like (and with) the rest of the fuel.


You should not have any pressure building up in the tank if you haven't capped this off. You MAY be feeling a vacuum which does happen as the tank is emptied. If it was PRESSURE you would feel the gasoline vapors rushing out around your hand. It's probably just vacuum if you have the stock configuration.

Feel free to delete the charcoal cannister and the associated vacuum lines from the metal thingy that runs along the block to the front turbo.

-Chris

 

All the canister does is collect fuel vapors from the gas in your tank evaporating and lets them into your engine to be used. Plus, it lets your car start eaier. Example: 93 octane is not all 93 octane. It's a mix of heavy ends (higher octane), and lighter ends (lower octane), in a concentration that yields an average of 93. That's just to put it simply. Anyway, lighter ends are more volatile, burn easier, and evaporate faster. If your car sat for awhile, all the lighter ends would evaporate, leaving hevy ends which are less volatile, making your car hard to start. But with a canister, your car lets those light ends (in vapor form) in the canister into your engine, making it easier to start, and run better while it is still warming up.
How many of you without canisters hve noticed your car is harder to start after it sat for a couple days? Probably all of you.
Yes the canister is an "emissions" device. It keeps fuel vapors from escaping into the atmosphere. But it sends them into your engine to be used. Why pay for gas to let it evaporate into the air? Removing the canister will drop your gas mileage for that reason. The canister DOES NOT hurt performance, so why take it out?
If you're looking to lower your gas mileage with no performance gain, just drill a small hole in your gas tank, you'll get the same effect.

 

Gasoline vapor is considered a pollutant. The charcoal cannister stores the vapor in activated charcoal, and purges it THROUGH the engine when the engine is on under certain conditions (idle I think). The "cleanest" way to get rid of it in a car is to burn it and run the exhaust through a few catalysts like (and with) the rest of the fuel.


You should not have any pressure building up in the tank if you haven't capped this off. You MAY be feeling a vacuum which does happen as the tank is emptied. If it was PRESSURE you would feel the gasoline vapors rushing out around your hand. It's probably just vacuum if you have the stock configuration.

Feel free to delete the charcoal cannister and the associated vacuum lines from the metal thingy that runs along the block to the front turbo.

-Chris

Now that I think about it my tank has been almost empty when that happens, and I dont feel any vapors or a strong gasoline smell.

 

All the canister does is collect fuel vapors from the gas in your tank evaporating and lets them into your engine to be used. Plus, it lets your car start eaier. Example: 93 octane is not all 93 octane. It's a mix of heavy ends (higher octane), and lighter ends (lower octane), in a concentration that yields an average of 93. That's just to put it simply. Anyway, lighter ends are more volatile, burn easier, and evaporate faster. If your car sat for awhile, all the lighter ends would evaporate, leaving hevy ends which are less volatile, making your car hard to start. But with a canister, your car lets those light ends (in vapor form) in the canister into your engine, making it easier to start, and run better while it is still warming up.
How many of you without canisters hve noticed your car is harder to start after it sat for a couple days? Probably all of you.
Yes the canister is an "emissions" device. It keeps fuel vapors from escaping into the atmosphere. But it sends them into your engine to be used. Why pay for gas to let it evaporate into the air? Removing the canister will drop your gas mileage for that reason. The canister DOES NOT hurt performance, so why take it out?
If you're looking to lower your gas mileage with no performance gain, just drill a small hole in your gas tank, you'll get the same effect.

The evap cannister is not responsible for any gas mileage improvement and its effect on starting is less than negligible. In fact, your engine has probably already started by the time ANY hydrocarbons from the cannister would reach the engine. Note that there is low flow through the charcoal cannister and therefore no significant quantity of fuel coming from it.


It won't lower your gas milage, it just gets another clumsy, unnecessary object out of your engine bay. This removal was part of my original vacuum hose reduction which has become so popular, and I stand by it as a disposable item.

-Chris

 

Looks like another argument that wont ever be settled (just guessing) but id really like to know who is right. Been wanting to remove mine for a while.