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Bass Cat Boats

The black hoses should never need replaced as they are A1 ethanol resistant. The grey engine hose is B2 and will need replacement.


The vent should release at 1 pound of pressure. The EPA EVAP requirement’s are 1 pound of pressure, not 1.1 or anything higher. We have found that many caps when joined into the system vent at higher than 1.0 Pounds, up to nearly 2 pounds, which is a tremendous amount of tank pressure. That’s likely what is causing your issue. Attwood manufactures our fuel caps, and we’ve found similar issues on other brands. Presently, We don’t have a legal ‘fix’ for this.

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