II Much Vent System install problem

[JohnUlaszek]

I have been using Earl nylon braded hose for my vent for at least 4 years...never notice gas smell from the car just sitting. My exhaust smell is what's irritating.

There is tremendous variation in the hoses available labeled as "fuel hose" some which are advertised to meet the requirements of the dozen variations of SAE J30. The requirements in J30 for permeation g/m²/day range from "not required" to "none". In other words, a hose can meet the requirement yet still outgas vapor or be incompatible with available fuel blends. So, what is working for you might not work for someone else and may not continue to work given the continuous changes in fuel formulations and how the products are used. As a car owner this may or may not be an issue for you, but if you are a car builder or manufacturer its a big deal.