ArmenMAxx

iTrader: (21)

I dont mean to bring up a topic which has been thoroughly discussed. This specific issue seems to be absent when searched.

My harness is modified for a single turbo and with that the purge control has been eliminated. I don't want to just vent the gas tank and deal with the smell, even if its at the tail end of the car. I just plan to leave the purge control system connected without the solenoid working. I know this may cause some interesting start up issues since the vapors build up in the manifold but my question is how bad is it? Will it be a problem if the car is sitting for months, heat, etc?

In a nutshell, who here is running the purge control system without the rack solenoid functioning and what is the result?

Thanks

ArmenMAxx

iTrader: (21)

opinions will be greatly appreciated.

ondabirdhouse

iTrader: (26)

I got rid of all that and just left the charcoal canister and the line connected to the tank. Never smelled a thing before I started my rebuild.

ArmenMAxx

iTrader: (21)

So you did have a line going to the solenoid/UIM? Ur just venting from the tank under the elbow?

Turk82

iTrader: (17)

Also interested in this. I currently have the charcoal canister connected and the line venting to atmosphere at the firewall. I'm not the biggest fan of venting that line to atmosphere and having gas fumes roam free around the car.

ondabirdhouse

iTrader: (26)

No, I removed the entire line all the way back to the charcoal canister.

heres a some info I found online.
A charcoal canister is part of the evaporative emission control (EVAP) system in many modern automobiles, which is designed to keep gasoline from evaporating into the atmosphere. Rather than venting a gas tank to the atmosphere, an EVAP system can allow fumes to flow into a canister that contains activated carbon and is therefore capable of adsorbing the fuel vapor. This process, coupled with the closed fuel system, can help ensure that a minimal amount of fuel vapor is allowed to reach the atmosphere.

ondabirdhouse

iTrader: (26)

But if you wanted to eliminate the valve. Just remove it and connect the line from under the fire wall to the uim/elbow(Wherever it usually goes). Make sure you put a ONE way check valve in there. don't want boost going to the gas tank.

ArmenMAxx

iTrader: (21)

I eliminated the valve and want to just run the line to the uim. I am just not sure wat ill side effects will happen by doin so lol . Lets say the sits for a few month, wouldnt the gas vapors cause a serious ignition when the motor starts? I know the charcoal canister ill eliminate some vapors but i dont know id it will be enough.

ondabirdhouse

iTrader: (26)

no ill side effect...its just vapor, you'll be fine.
Here is the URL to this discussion. If you check out post #4 Goodfella basicly says the same thing I said.

ArmenMAxx

iTrader: (21)

Nice, I did see that thread. It seems that what you said is the best option. I will go ahead and run the line from the charcoal canister to the UIM with the check valve. If anything weird happens ill be sure to let this thread know lol.

I am curious though if my idle will richen up a lot even the charcoal canisters; especially on hot days.

ondabirdhouse

iTrader: (26)

...only if there is constant pressure in the tank, which is never or if you take the fuel cap off while its running...the vacuum will suck the fumes/air through the filler hose/tank thus into the charcoal canister and so forth.