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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

ECC Valve

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Old Sep 11, 2017 | 09:31 PM
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ECC Valve

I purchased a tank without a ecc valve and after later examination I have an ecc valve on my existing tank. Is the ecc valve needed or can eliminate it? if so what is involved in eliminating it?
 
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Old Sep 12, 2017 | 01:47 AM
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You just need a vented fuel cap if you eliminate it.
 
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Old Sep 12, 2017 | 08:21 AM
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Ok, so now I've looked into the gas cap, is their any difference with a vented gas cap ans a emission control gas cap.
 
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Old Sep 12, 2017 | 02:40 PM
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Emissions caps are not vented
 
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Old Sep 14, 2017 | 02:50 PM
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You would also have to change the fuel filler neck. Vented cap mates with a vented cap filler neck. A non-vented emissions cap fits in a matching filler neck. The tangs on a vented cap are real close to the cap. The tangs on a non-vented cap are farther away from itself. So where in the filler neck those tangs grab is deeper in an emissions filler neck. Ford did this so a person couldn't put a vented cap on an emissions vehicle.
 
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Old Sep 14, 2017 | 03:24 PM
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Also be careful of caps that say they are "vented". Mine was not. I had to fix it with a drill bit.
 
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Old Sep 16, 2017 | 05:10 AM
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jas what did you do to convert the cap?
 
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