PFF - Pennock's Fiero Forum, PDA Edition

Vapor canister delete (Page 1/2)

Clyhead

NOV 19, 05:14 PM

I was poking through the engine bay and I noticed the vacuum lines going to the vapor canister where completely rotten so I took them and the vapor canister out. Just wondering if this is a suitable solution or if I should run new lines and put the canister back in

You can see the picture if you right click the icon and select view image

[This message has been edited by Clyhead (edited 11-19-2016).]

olejoedad

NOV 19, 06:34 PM

Put it back in unless you enjoy the smell of gasoline.

Dennis LaGrua

NOV 19, 07:28 PM

I don't use them. I just route the gas tank vent line back to the air filter can. Five years no gas smell and no problems.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

fierofool

NOV 19, 08:05 PM

Vapors pushed out due to heat expansion, reaches the filter canister and begins to exit out the intake water separator opening. Someone flicks a smoke down in that area and you got big problems. Just loop it to the manifold vacuum line from the canister. Of course, a backfire at start could have the same catastrophic effect.

[This message has been edited by fierofool (edited 11-19-2016).]

Dennis LaGrua

NOV 19, 08:58 PM

quote

Originally posted by fierofool:

Vapors pushed out due to heat expansion, reaches the filter canister and begins to exit out the intake water separator opening. Someone flicks a smoke down in that area and you got big problems. Just loop it to the manifold vacuum line from the canister. Of course, a backfire at start could have the same catastrophic effect.

Fumes would be trapped in my intake system but how much through a 1/2" line? Certainly some food for thought on the backfire issue. I just wonder if the quantity of fumes getting into the air filter box is sizable, having it vented there. Heck going back to the 1960's and 1970's the tanks vented to the outside. Don't recall many fires from misplaced butts but I understand your logic. .

theogre

NOV 20, 01:02 AM

quote

Originally posted by Clyhead:
I was poking through the engine bay and I noticed the vacuum lines going to the vapor canister where completely rotten so I took them and the vapor canister out. Just wondering if this is a suitable solution or if I should run new lines and put the canister back in

You can see the picture if you right click the icon and select view image

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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

Dennis LaGrua

NOV 20, 02:22 PM

quote

Originally posted by theogre:

[QUOTE]Originally posted by Clyhead:
I was poking through the engine bay and I noticed the vacuum lines going to the vapor canister where completely rotten so I took them and the vapor canister out. Just wondering if this is a suitable solution or if I should run new lines and put the canister back in

You can see the picture if you right click the icon and select view image

See my Cave, Emissions
Depending on many things... W/O the can, cold/hot cycling the tank will easy push fumes out and let air and worse H2O in.
Is illegal in most places
Can be fire/explosion problems
Can be Smell problems
Water + Ethanol gas does not play well.

[/QUOTE]

Can't argue with that logic but five years out and none of the problems you describe are happening. Doing further checks as an insurance check.

Jason88Notchie

NOV 20, 06:11 PM

My rule of thumb is if you are running a stock motor setup keep your stock options. There is a reason all that stuff is there. If you delete, have a reason other than just because or just cheaping out. I thank God that the previous owner on my Fiero paid attention to detail and didn't alter anything. He fixed things the right way. So whenever I have issues I can troubleshoot pretty easily. I don't have to look to the sky and MF the PO.

Raydar

NOV 20, 07:07 PM

I removed my canister. The vent line is now attached to the air cleaner duct, just before the throttle body. (4.9 with Allante intake setup.)
I thought about adding a one-way check valve, but it hasn't seemed necessary.

dobey

NOV 20, 07:48 PM

quote

Originally posted by Clyhead:

I was poking through the engine bay and I noticed the vacuum lines going to the vapor canister where completely rotten so I took them and the vapor canister out. Just wondering if this is a suitable solution or if I should run new lines and put the canister back in

You can see the picture if you right click the icon and select view image

Fix it. Deleting any emissions equipment is a violation of Federal Regulations as well as most likely also a violation of your state and local laws. There is nothing to gain by deleting it. All deleting the canister does is result in wasting fuel as vapors, rather than keeping it in your fuel system to be burned to move the car.