so I have a WEN 3500 Watt gas generator. It has 220 hrs on it and the other day it just shut off. I went to check it and the oil sensor plug had come out of the crankcase and oil was oozing everwhere. i pushed it pack in changed the oil because it was due for that anways and started it up. after 10 min the oil sensor plug/wire pushed out again and oil was everywhere. Does anyone know what the problem might be? perhaps the plug or oil sensor needs to be repalced or am i having an internal pressure issue... something bigger inside. Also, its a 6.5 OHV engine. PLEASE HELP!