Charcoal filter removal?

rhk109 · 02-20-2004, 03:55 PM

I am in the middle of my first engine drop and I am detailing the engine bay. Can I get rid of that big ugly black charcoal filter on the passenger side of the engine bay. There is only 1 hose connected to it that head towards the front of the car. I assume it is from the fuel tank. There are other open ports on it that I believe used to connect to the CIS and fan. I now have Webers and these ports are no longer used. Should they be? Does anyone have any tricks to eliminate the charcoal filter?

MotoSook · 02-20-2004, 04:18 PM

get rid of it...I just seal up the end of that little hose after I cut it to a length it wouldn't flop around in the engine bay.

banjomike · banjomike's Garage

Don't have much to say on the subject but I thought it would be cool to have three people with 76 911s w/ 3.0Ls in a row.

Actually I think that is to prevent the evaporation of gasoline (hydrocarbons), since fuel system leaks can be a big factor in overall car emissions. So it might not affect performance but it ain't a 100% responsible thing to do.

Enjoy that nifty power to wieght ratio!

sammyg2 · 02-20-2004, 05:22 PM

Either rip it out completely or hook it up to the tank and run the other line to an air cleaner, that would help to reduce fuel smell in the cabin if nothing else.

rhk109 · 02-20-2004, 06:47 PM

If I rip it out completely can I just plug the tank where the vent line comes out. Will this cause any problems when refueling? The line appears to come out the top of the tank in the truck and dissapears into the body near the fuel filler. How in the world does it get back to the engine compartment?

sammyg2 · 02-20-2004, 08:38 PM

You have to have some kind of vent on the tank. Stock gas caps are non-venting by design so if you block off all venting points you will have problems. If you want to run without a charcoal canister you can do what they used to do, run a vented gas cap or take the high point vent hose and run it under the car somewhere.

rhk109 · 02-21-2004, 05:56 AM

If I run it to one of the air cleaners can this cause any type of inbalance between the cylinder banks? Can the vacuum in the intake acutally draw fuel vapors out of the tank causing that side too be too rich? OK, maybe I'm being really anal but I'm an engineer and that's what I do for a living. Perhaps I should just install a small vent filter on the end of the hose in the engine bay.