Does air ever get trapped in the gas tank? - Page 3 - Fuelly Forums

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Old 01-18-2013, 07:06 AM   #21
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What's the new vapor recovery system in cars? If you just mean the evaporative emissions system (charcoal canister, vent valves, release valves, tubes going to intake manifold, etc), that's been around for decades (my 1980 has it, albeit a bit primitive).

Pumping fuel produces plenty of vapors whether or not there's vapors in the tank...I'm pretty sure the pumps still should recover those.

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Old 01-18-2013, 04:32 PM   #22
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I really appreciate the difference between California pumps and even Massachusetts pumps (nevermind Nevada), so why would they phase the "bellows" pumps out? If anything, the California ones should be a nationwide standard.

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Old 01-22-2013, 05:28 AM   #23
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Exhaust emission requirements aren't the only ones with tightening standards. Systems like Ford's capless filler can seal in the vapors while pumping. It's an improvement on the systems from the '80s. If the vehicles are catching the vapors, that you paid for, then they aren't needed on the pumps, which will save some on station construction. It won't be soon, because many cars on the road don't have such systems, but it will eventually happen. Maybe not in California.

While nice to see, it is my understanding the bellows isn't necessary. The majority of the vapors are caught by the nozzle.

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