The fuel guage on my 14 Versa would not register after a RECENT FILL UP. i SWITCHED OFF THE ENGINE, RESTARTED, AND THE GUAGE NOW WILL ONLY READ 3/4 FULL EVEN AFTER A COMPLETE TOP OFF. aNY IDEAS? aLSO, THE SERVICE ENGINE SOON LIGHT HAS BEEN OFF AND ON RECENTLY. cONNECTED? Thanks for your ideas.