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Old 03-17-2015, 06:20 PM   #5
LuvNLife
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Join Date: May 2010
Location: Crossville, TN
Posts: 142
Re: Pressure In Fuel Tank When Removing Gas Cap

Quote:
Originally Posted by IADC43 View Post
I'd get a new vented gas cap. If that isn't possible (because it sounds like a custom cap) then the shop should install a vent line.
What threw me is the pressure rushing out. In my (far from expert) way of thinking, a bad or missing vent line would create a vacuum, with the fuel pump constantly pulling the fuel out, and opening the cap would have sucked in air, rather than push it out. So, maybe what I'm thinking was a rush of air coming out, was actually air rushing in, then back out?

I know the shop will check the vent line, but I like to be able to talk to them somewhat intelligently...

Jerry
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