Fuel tank vapor line - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 5 (permalink) Old 07-07-2013, 02:42 PM Thread Starter
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Fuel tank vapor line

Tied off under car. Is this thin metal tube next to the banjo bolt where it should connect? Anyone know the I.D. of this line?

Also is the canister supposed to just set in trunk or normally mounted in some way?
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post #2 of 5 (permalink) Old 07-07-2013, 03:50 PM
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There should be a plastic tube connected to the metal tube. On my car the missing section runs through the firewall below the windshield washer fluid reservoir under the carpeting back into the trunk area where it connects to that black plastic box you show in the second photo. And yes, the plastic box is mounted "upright" against the inside fender right behind the fuel intake tube. Not sure of the diameter, would have to go measure mine. Perhaps others will know.

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post #3 of 5 (permalink) Old 07-07-2013, 04:09 PM
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The line in the engine compartment is the tube from the vapor recover tank.

Here's picture of a complete and properly installed vapor recovery system in the trunk. You can get the clear, fuel resistant tubing at Lowe's or probably any home center/ACE hardware store. It's not carrying liquid fuel, just vapor.

Three pictures are worth 3,000 words.
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post #4 of 5 (permalink) Old 07-07-2013, 05:17 PM Thread Starter
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Very helpful, thanks. John, the metal tube you show is the one connected to the side of the head cover, correct?

On my car the tubing is a somewhat clear bluish tubing and runs with the fuel lines but was cut and tied off. Also, the 8mm hose that comes off the top of the fuel tank is just open and ends under the carbs(my car has a dellorto carb conversion). I'm assuming this should be attached somewhere, I assume to the SPICA if it were there. Since it's not, where should this go?
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post #5 of 5 (permalink) Old 07-09-2013, 04:36 AM
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The SPICA pump has a return line to the tank in the case of too much pressure. In your setup you don't need it, so it's okay that it isn't connected to anything. You should, however, seal it with an appropriate size bolt and clamp. Otherwise, you could be getting gas fumes in the engine compartment.

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