[72c20customcamper]

If your pressure is within spec the ethonal in the gas can cause this also . Alchohol boils at a much lower point heat soak after shut down can boil the fuel in the bowl and raise the pressure. One of my cars uses low octane gas which has ethonal in it gave me this problem switched to the non ethonal high test gas and problem is gone . I was going to add an insulator plate but for the amount I drive it the 30 cents a gallon higher price is a non issue