What is this?

[v-tec]

Getting into doing my fuel lines now for the 4age.

ive got two fuel lines, one that i remember was the line that went into the side of the 4ac carby, another must have goin into it around the back of the carby or something...

Anyway, i got those two lines and a line coming of this black cylinder into my petrol tank.
Ive just always wondered what it is...
do i need it for the 4age? does it have something to do with my fuel level guage?

http://img133.imageshack.us/img133/8309/what4cf.jpg

Also, why do i have two fuel lines and not one? and do i need it for the 4age?

any helpful info would be appreciated

cheers

[Mad RS]

I believe they are called a charcole canister. They have something to do with gathering oil/fuel fumes and allowing it to be catured and sent through the engine to be burnt.

I think that is right anyway. For a "Legal" conversion a RWC needs the cars standard emissions components. But in saying that I wouldn't think that many mechanics would even notice if it was there or not.

[Hen is a total nutcase]

Yes, its a charcoal canister. A vent tube from the fuel tank is connected to the top. There is a drain out the bottom and the other line goes to the intake somewhere.

Hen

[slide86]

it SHOULD be used to get the correct emmisons and all that crap. if you are going to get it fully engineered with emmisions test then you MAY need to retain it.

BUT....

i wouldnt worry bout it. Its for the greenies out there who dont like the fuel tanks to vent to atmosphere. And the reason that you have two fuel lines is that one is the feed line (the larger) and the smaller one is the return line back to the tank. you will need to use both of these in an EFI setup

[SprinterTRD]

You will need to have this if you want an engineer to pass the car, tha small line goes to a fitting on the throttle body. I think its marked as "C" with a small 3mm pipe.

[flamingheads]

I would guess it was a black cylindrical object that probably has something to do with the fuel....
I thought the one on my old car was held in with a spring, unless im mistaken.
Thats my 2c anyway http://www.ae86drivingclub.com.au/forums/emoticons/2thumbs.gif

[mikewestphoto]

Can someone tell me why the charcoal canister makes a noise?

[Gilly]

it shouldn't make any noise!!!! what noise is it making?

[SprinterTRD]

Yep the canister will make a noise, It has a one way valve in it, and it opens whenever there is pressure in the fuel tank.

[v-tec]

some times ive hear it make a buzzing noise... like electricity sparking or something (wouldnt be electric cause ive had the batter out for lik two months now)
Id say ill hook it up to get it engineer certed... but will see how i go. i just need the car so i can start it, so will probly do it later

but yea, if i need the two fuel lines...

will i have to make two lines of the new hoseing? (ie, new hoseing being larger for the 4age) or doesnt it really matter about the return line hose size?

These questions may seem quite newbish for what im trying to complete here, but any info is still greatly appreciated.

also, can someone explain to me what is the purpose of the fuel returning to the fuel tank? why and how etc

cheers

[Dish]

Just heard mine making a noise today. Sounded electrical at first then opened up the bonnet and had a look and listen, was coming from charcoal canister.

[selk]

me too

[biggo]

short explaination:

fuel needs to return to the tank so the lines dont bust http://www.ae86drivingclub.com.au/forums/emoticons/tongue.gif

Long explaination:

The fuel system runs an open curcuit due to being under pressure. If there was no return line then expect all fuel related accessories to go bust hehe. Petrol goes into the fuel rail feeding the injectors but what ever they dont use flows out the end and back to the tank for another cycle. Fuel pressure regulators can help retain the fuel in the rail, but usually this only needs to be done to trick the ECU n shit.

hope my rambling helps

[SprinterTRD]

fuel needs to return to the tank so the lines dont bust[/b]

Um not quite right, The only reason there is a fuel return line on a 4AGE is that the fuel regulator is mounted on the fuel rail.

For the regulator to do its job fuel must push on a pin that is spring loaded. the fuel that gets past the pin needs to get back into the tank somehow.

If the regulator and pump are mounted in the tank then only one line needs to go to the injectors. The fule rail has one end blocked and one going to the pressure side of the pump & regulator.

[v-tec]

ok thanks... im doing the lines tonight

[KE70Drifter]

I dont use one http://www.ae86drivingclub.com.au/forums/emoticons/tongue.gif