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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

What is this box for???

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Old Jan 22, 2007 | 08:59 PM
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From: KILGORE USA
Question What is this box for???

On my '81 F150 302 truck, I have a stock white plastic box mounted low on the frame, near the front on the passenger side. It has a line running to the back of the truck and right now a open hose connection on top. What is this canister used for.
Thanks for any help.
 
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Old Jan 22, 2007 | 09:09 PM
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Charcoal canister, evaporative emissions control. Sometimes they are black too.
 
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Old Jan 22, 2007 | 10:38 PM
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Fellro is correct...it should have a larger hose running to the carb. The float bowl vent. I think the other small hose runs back to the gas tank...someone correct me if I'm wrong.
 
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Old Jan 22, 2007 | 11:11 PM
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The configuration varies but it sounds like it has been disconnected. Your emissions label should show the proper connections. Without a suction line back to the manifold the "box" will eventually start dripping gas and smell terrible.
 
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Old Jan 22, 2007 | 11:39 PM
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Actually it's been disconnected for the eight years I've owned the truck. No problems yet. I was just wondering since I am trying to fix up the truck a bit, what this was for and if I should do something with it.
 
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Old Jan 23, 2007 | 01:06 AM
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Different year.... same concept

 
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