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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Hose identification

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Old Aug 28, 2022 | 11:50 AM
  #1  
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bdwiggin
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Hose identification

Looking for assistance identifying the hose/tube in the below picture. It runs along the passenger side back to what looks like the rear fuel tank area but I lose track of where it ultimately ends. Feels like a hard plastic rather than a rubber and it is currently capped off. The cap is badly split and I'm wondering if it is causing vacuum issues. I have no background on really anything auto/engine related but I'm trying to learn what I can so any and all input is greatly appreciated. Apologies in advance for the picture.. it was hard to get any sort of angle showing where the hose leads.


 
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Old Aug 28, 2022 | 12:25 PM
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Goes to your missing charcoal evap canister.
 
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Old Aug 28, 2022 | 12:39 PM
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Thanks. Previous owner removed all emissions components. I assume the split in the cap would cause engine performance issues?
 
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Old Aug 28, 2022 | 01:13 PM
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No, it's just venting tank vapor instead of burning it.
 
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Old Aug 28, 2022 | 01:15 PM
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It's better if the cap is off so that your fuel tanks have a way to get air in.
 
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Old Aug 28, 2022 | 04:14 PM
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If the hole /barb fitting on throttle body isnt plugged that could cause issues, especially if throttle body has 2 barb fittings on it, depends on year, of truck.


 
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