I JUST bought a 2006 Pathfinder with 26,000 miles. My first time fueling it, the gas nozzle clicked off after about 30 seconds. It continued to do this until the nozzle was almost completely out of the opening! I could NOT fill the tank! I managed to get 3/4 of a tank, but it was a chore. Probably clicked off 15 times or so. What is the problem?