What Is This?

What's cut? Draw a circle around the area? If you have cut a vacuum line you will run rich. That will cause a gas smell.

I think that is the gas tank vent line...I emphasise I "think". Mine was hacked away too.

Joe

Noobz347 said:

Was yours tucked away into a factory engine harness? I don't recall vent or vac lines being wrapped that way.

Anyone recall seeing hoses wrapped?

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I don't think that line is coming from the harness. I believe it is cut and the cut end is sitting on top of the harness. The line runs back through the hole in the inner fender, along with the brake lines. Unless I am totally looking at this pic wrong.

Joe

I'm sure @jrichker has a handy dandy diagram that can answer this question.

Joe

OneWheelPeel said:

So I did some quick researching now that I have an idea of what it is and I'm guessing this is the line that would go to the charcoal can?

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Good guess... Put another piece of hose on it so that you can blow air through it. Station someone at the rear of the car and take the gas cap off. Blow through the hose and have your helper listen at the gas filler for moving air...

If you disconnected the carbon canister and failed to properly cap the vacuum line coming from under the upper intake manifold, you will have problems. You will also have problems if the remaining hose coming from under the upper intake manifold or caps for the vacuum line are sucking air.

Charcoal canister plumbing - one 3/8" tube from the bottom of the upper manifold to the rubber hose. Rubber hose connects to one side of the canister solenoid valve. Other side of the solenoid valve connects to one side of the canister. The other side of the canister connects to a rubber hose that connects to a line that goes all the way back to the gas tank. There is an electrical connector coming from the passenger side injector harness near #1 injector that plugs into the canister solenoid valve. It's purpose is to vent the gas tank. The solenoid valve opens at cruse to provide some extra fuel. The canister is normally mounted on the passenger side frame rail near the smog pump pulley.



It does not weigh but a pound or so and helps richen up the cruse mixture. It draws no HP & keeps the car from smelling like gasoline in a closed garage. So with all these good things and no bad ones, why not hook it up & use it?


The purge valve solenoid connector is a dangling wire that is near the ECT sensor and oil filler on the passenger side rocker cover. The actual solenoid valve is down next to the carbon canister. There is about 12"-16" of wire that runs parallel to the canister vent hose that comes off the bottom side of the upper intake manifold. That hose connects one port of the solenoid valve; the other port connects to the carbon canister.

The purge valve solenoid should be available at your local auto parts store.

Purge valve solenoid:



The carbon canister is normally mounted on the passenger side frame rail near the smog pump pulley.
Carbon Canister:

OneWheelPeel said:

Tell me if I'm understanding this correctly. The purge valve solenoid is pretty much a switch that opens to let the vacuum get pulled when the computer tells it to?

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Yes, the computer turns on the solenoid valve to vent the vapor and vacuum sucks it into the engine. No waste and no gasoline stink.