emissions question

[Aproductions]

Now what are you guys doing to vent the gas smell away after an emission delete?

do you put a check valve there and then with a filter there or do you get a venting gas cap or something?

 

[ReYnd]

Are you talking about the pipe on the firewall that used to go to the charcoal canister? Don't cap it. Filter would be pretty useless for the smell. I followed the suggestion of someone on here and ran a foot-long piece of fuel hose down behind the fender well. The little gusset thing for 1G AWDs keeps mine in place nicely, surely you can find a similar spot for yours.

And someone told me last time I said that, "Oh there isn't any smell!" Your nose just isn't sensitive enough. Or your firewall has fewer holes.

 

[Aproductions]

haha well to me gas fumes are annoying.

should I put a check valve on this line so nothing can flow in there and also so pressure doesn't build up in the tank?

and where should I make this line go?

 

[ReYnd]

Fumes are annoying, bad for you, and definitely give me headaches. The hard pipe is the fuel tank vent if I'm not mistaken. And with all those dips, twists, and other crazy maneuvers it takes to get to the front of the car, I really doubt anything is determined enough to get in there. A check valve would be bad because it's supposed to act as a breather, working both ways. If a vacuum were created in the tank, the fuel pump would have to work extra hard. A filter would be okay if you really wanted to go overboard, but I don't see a point.

Just route the hose out behind your front passenger wheel, anywhere it will fit snugly and not get pinched.

 

[Aproductions]

Fumes are annoying, bad for you, and definitely give me headaches. The hard pipe is the fuel tank vent if I'm not mistaken. And with all those dips, twists, and other crazy maneuvers it takes to get to the front of the car, I really doubt anything is determined enough to get in there. A check valve would be bad because it's supposed to act as a breather, working both ways. If a vacuum were created in the tank, the fuel pump would have to work extra hard. A filter would be okay if you really wanted to go overboard, but I don't see a point.

Just route the hose out behind your front passenger wheel, anywhere it will fit snugly and not get pinched.

what hard pipe?

and so no check valve and no filter? just put a hose on it and put it behind the front wheel? wouldn't it still smell really bad?






edit: would it be okay to take the hose and just run it to my intake pipe?

 

[Colt4G63 also]

edit: would it be okay to take the hose and just run it to my intake pipe?

Yes, that's where the canister would have vented to originally.

 

[LiquidX]

You want to keep the check valve connected that is currently on the line. You have a couple options, either put a breather filter on the end of the line and put it somewhere underneither and behing you so you don't smell it or hook the other end up to you intake.

Either way will work fine but if you have visual emissions they may make a comment about the filter IF they see it and IF it just happens to smell like fuel.

If you don't keep the check valve on there then (I'll make an assumption on how gasses work) you will loose fuel due to evaporation constantly unlike it being sucked back into the intake and burned (assuming the car is running)


However to go against the check valve. You could plug the line and/or remove it from the tank. You will build up pressure in the tank but I highly doubt it will be enough presure in the tank to make it do damage. I believe I have a bad check valve on my canister; I hear a vibrating noise about 30 seconds after I shut the car off. If I have a full tank and let it go empty, pulling the cap out there is a massive rush of trapped fumes that built up.

As stated the best method would be to either put a breather filter or run it back to your intake; both with the check valve in place.

 

[Aproductions]

so I don't have the canister or anything anymore.

I only have the line itself. So I would take just the line and add a fuel hose to the intake pipe and with check valve?

 

[ReYnd]

Interesting. This is the first time I've heard these suggestions and think I'll route it to the intake when I have a chance. Thanks for putting us on the right track guys!

 

[Aproductions]

Interesting. This is the first time I've heard these suggestions and think I'll route it to the intake when I have a chance. Thanks for putting us on the right track guys!

you were saying to route it behind the front wheel WITHOUT a check valve

and they said put it to the intake WITH a check valve


which is the better idea?

 

[LiquidX]

If you have the check valve and route it to the intake, it'll only allow the excess fuel go into the intake when the pressure is too much and cracks the seal. You won't have any gas smell either. This will only work if you still have an intake with a nipple for the line.

Leaving it tucked away with a breather filter will keep the pressure out of the tank but vapors will be vented to the atmosphere so you will occasionally have a fuel smell when it vents out.

 

[knochgoon24]

I just have a little extra line routed down underneath the car. No problems so far.

 

[Aproductions]

so is there any side effect for the air if I have the vapors going into the intake vs. the vapors not going to the intake?


and so my options are to either place a check valve on the line and just tuck it somewhere ?

or to put a check valve on the line and put it to my intake?