Vapor Storage Canister

[dkoug]

Diagram http://www.amceaglenest.com/~iowaeagl/guide/index.php?title=Fuel_Return_System

The return line of my 82 Eagle if left open as it should be has raw gas running  from the vapor canister . 

Pinch if off and drip (good size drip) stops.  I put a new roll over valve on it about 2 years ago and I think it stopped the problem but old mind not sure!!!!!!

Any advice on this fuel leak from the Vapor Canister?
With the line closed to the fuel tank the fuel drip from the Canister stops, any problems without the return fuel line??

Much appreciated.

dkoug

[ammachine390]

Nothing in that diagram is labeled as a return line. That pictured is incorrectly labeled as well, it is not the fuel return system, it a diagram of the evaporative system, which collects gasoline vapors and stores them in the canister. The fuel return system is connected to the fuel pump. Also, none of your hoses should be left open. Which hose in that diagram is open your system?

[AMC of Houston]

What Dan said x 2.   The fuel return line (the one from the second small outlet on the fuel filter) should only go to the metal return line back to the tank.   It should NOT be part of, or in, the evaporative system at all.

[donnyeagle]

I have a question please. My canister has a large (looks like 3/8") hose attached to the bottom. Where does this hose connect.

[dkoug]

Well, if I leave the second line open that goes to the metal tube that I understand goes back to the roll over valve and fuel tank with a full fuel tank I get raw fuel dripping out of the vapor canister.  I pinch it off and fuel leak from the canister stops and car still runs normally.  Going t put on a new roll over valve tomorrow. hoping it soves the problem.

The second line mentioned should go where???

thanks

[BenM]

There are two lines on the driver's side, close together. One is the return line from the filter, the other is the vent line. The return line goes across the back of the car and joins the sending unit, and the vent line goes to the top of the tank, through the vapor and rollover valves.

The return line has an often missing check valve in it. The check valve actually slipped into the hose and is easily overlooked when replacing lines. It took just 1-2 psi to open, I believe.

The big connection on the bottom of the canister is to allow moisture to drip out of the bottom, there should be a hose down under the car from there open on the bottom.

So the fuel filter bypass (which is always at 12:00) goes through the check valve and straight into the return line.

The carb bowl lines and tank vent go into the canister. The drain comes from the bottom of the canister to below the car. The purge line joins the PCV line either at the PCV valve or at the back of the carburetor. The purge signal line connects to the CTO or dual CTO.

There are a lot of lines there.

[dkoug]

BenM, thanks very much.

dkoug