if your looking at the engine from in front of the car... looking towards the passenger side inner firewall... directly behind the shock tower and right below the hood hinge what is the large.. "canister" looking thing?? the car is a 74 302 4door... well was a 302.... now its a 347 stroker with a 4barrel and intake. if i recall correct this canister was somehow mated up with my factory air filter, but now it isn't... can i remove it? do i need it? thanks again. jason
What color is it? IUs it Black or blue? The blue one serves as a fuel vapor thingy magigger. It recycles fuel vapors from the tank. The black one serves as a vacume resevoir for all the vacume powered things. This is my 2 cents worth. Hope I'm right... Mark
It is the charcoal cannister that absorbed the tank vapors. Without the hose to the air cleaner it is of no value.
Does it look like this? If so, it is what Marks said it is. I would leave it and hook it back up because it dosent rob any power from your motor and you need to vent the fuel vapors somewhere. Mavericks do not use vented caps so this is where they end up. By the way, you can get that cardboard tubing from Ford still. It is part #D4ZZ9D667A
The charcol canister is easy to remove. The only thing holding it on is a retainer ring just loosen the retainer ring bolt (no need to remove it completley) and then wiggle the canister out it's not heavy at all. It's really just an emissions thing but as Mavaholic pointed out those vapors have to go somewhere, if the canister isn't hooked up they can end up inside the car (at least they do on mine sometimes - the hose I have for mine keeps falling off the air cleaner (the tube on the air cleaner where it connects is bad) When the hose is on no fuel smell.
I removed my cannister completely & used the steel line for a return line to the tank for the EFI. I capped off the hose for the cannister from the tank & installed a repro 65/66 Shelby vented gas cap. The cap also comes with the retaining cable.
that is exactly what it looks like mavaholic what is a vent cap? why do i need to vent the fuel vapors? i'm assuming that by not having it hooked up the fuel vapors just "stay floating" in my engine bay? i never smell them?? care to explain more to me? thanks
Andwrong, part of *emissions control* is the emissions that come out of your gas tank. Rather than vent the gas cap like they did through the 60s, the mfgs sealed the fuel system where the gas vapors could not escape except through a neutralizing charcoal cannister filter and back into the engine. California even took it one step further and put vapor recovery systems on their gas pump nozzes at gas stations. If you remove the cannister, do not cap the line. Especially if you do not have an older vented gas cap. You will get a vacuum in your tank and vapor lock. Since it doesn't weigh much, I would leave it in there, even if if isn't hooked up to the air cleaner anymore. That will still absorb some of the fumes.
