I have a johnson 140 and was running it this weekend when the horn started to sound, I shut it down and checked everything and couldn't find any problems......long story short I started running it again and the horn was blasting away and finally the motor just shut down. I later found that the oil injector line had come off. The motor seems to be running ok again but I was wondering if they have a saftey feature that shuts them down before any damage is done or isit hust a matter of time before this motor is history?