went to fill up my 82 yesterday with gas and when i was almost home the bike started to act like it was starving for fuel. well sure enough some idiot biker forgot to turn on the petcock, running the carbs dry. after i got through kicking myself, i turned the gas on and went to restart it. heard one cyl catch then the next and so on. the oil light never went out. i was only a couple of hundred feet from home so i rode it into the driveway and shut it off. when i went to re start it, it makes a thumping noise near the rear of the motor and the oil light still wont go out. hooked up one of those aftermarket oil guages and cant get a reading so no oil pressure. removed the oil and filter and didnt see anything unusual. removed the oil strainer and it was clean. what do i need to look for next?