Reply To: gas pressure

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You can put a pop off valve in the tank area. They are available from supply houses that sell to scientific labs. Order one made of brass, not plastic. They are available in 1/2 pound increments. The gas today has a much lower boiling point and expansion ratio, and when the tank gets heated in the sun, pressure can rise. Also look at the air pump, cars run higher rpm today due to faster road conditions. I have seen this problem on my 14 Caddy. Too much pressure is VERY DANGEROUS! Youwant to run the system with as little pressure as possible and not have any running problems.