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Old 01-08-2011, 07:52 PM
msrfan msrfan is offline
Motorized Bicycle Elite Member
Join Date: Sep 2010
Location: Southern California
Posts: 1,484
Default Re: Gas Cap Problems

A low pressure check (one way) valve would allow air to enter the cap, but not allow fuel to leak. The carb should be able to hold back what little pressure builds in the tank from sloshing. I've seen such valves in 1/8" npt male. Some are even adjustable.
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