Venting Gas Tank??

[asecretfile]

Can I take the gas tank vent line and feed it directly into the manifold here safely without the charcoal canister?

View attachment 321819

thanks

 

[giddyup306]

I don't think it would be a good idea to be pulling a vacuum on the fuel tank...

 

[monte87]

I ripped all the fuel emssiosn crap outta my stang, years ago-Charcoal canister, hoses and left the electrcial plug disconnected near the fuel rail, left the hard line in place and cut the fuel tank hose and vented it, Just below the rear wheel.... Its been liek that for 4 years, no rpblems.
NOTE_they do say, not to leave the vehicle inside a house garage, for the fumes could cause combustion with things sucjh as a heater, etc... But my ride is in a huge lot, so no worries.
But it can bve done, I have done it. i wouldnt do it-Unless-You dont feel like replacing the charcoal canister. Just my 2 cents

Later Ant

 

[monte87]

Oh and plug up the line to the mani with a rubber plug. Will be a vacuum leak. Unless you have a cobra intake upper-Like me, Plug that one up in front.

 

[Wallzy]

This sounds like a recipe for disaster, don't know if it would happen, but i would want nothing to do with a backfire thru the intake and a clean path into my fuel tank. That = FUTURE FAIL

Walz

 

[HISSIN50]

Please don't do it.

 

[Mustang5L5]

You do not want to draw raw gasoline vapors into your engine. That's a recipe for disaster. Gas doesn't blow up....it's vapors do. You could light a match inside your gas tank and it wouldn't even strike. The danger is when the vapor mixes with oxygen in the right vapor concentration and see's a spark. Most fuel fires start at the filler neck because of this.

With that said, you def want to pass the raw vapor through activated charcoal as it helps absorb the raw vapors.

Also, if you remove the charcoal canister, you want to vent the line from the tank to a place where vapors cannot accumulate at all.

 

[monte87]

If the rubber line is cut and vented to the atmosphere how can it possible have a backfire into the gas tank??? Its impossible. Once you disconnect the rubber lines from the charcoal canister-Your actually cutting it to the plastic hardline that travels throughout the bottom of the car upto the gas tank, those same lines that take the fumes to the chracoal canister, they come from the tank. So instead of travelling all the way upto the canister, they are simply venting outta the tank to the atmosphere, No fume buildup,... The only way is if you have th ecar inside a small closed garage, then its bad...... No place for the fumes to go. Am i correct in this assumption?

 

[monte87]

"Also, if you remove the charcoal canister, you want to vent the line from the tank to a place where vapors cannot accumulate at all."

ABSOLUTLEY, agreed-in a wide open space as being outside....

 

[asecretfile]

ok thanks, will just plug that intake port

 

[Mustang5L5]

If the rubber line is cut and vented to the atmosphere how can it possible have a backfire into the gas tank??? Its impossible. Once you disconnect the rubber lines from the charcoal canister-Your actually cutting it to the plastic hardline that travels throughout the bottom of the car upto the gas tank, those same lines that take the fumes to the chracoal canister, they come from the tank. So instead of travelling all the way upto the canister, they are simply venting outta the tank to the atmosphere, No fume buildup,... The only way is if you have th ecar inside a small closed garage, then its bad...... No place for the fumes to go. Am i correct in this assumption?

I never meant venting back to the gas tank.


The vapor will collect under the car as well. You don't need a garage. Get a nice warm day and fumes will come out of the line and collect in small pockets inside a fender or under the hood or whereever the line is actually placed and vented to.

It's a long shot that anything will ever ignite it, but it could happen. Underhood fires do happen. Would you want one fed by gasloline vapors venting out of that open line as the fire under the hood heats the fuel in the lines and expands it pushing vapors out?


Just relocate it to the inside of the fender like the SN95's. RUn the line to it and a vac line up to the intake. Simple and safe.