Home › Forum › Ask A Member › ’77 OMC 9.9hp hard start warm › Reply To: ’77 OMC 9.9hp hard start warm
I probably am not describing myself very well. I did advance the neutral lock out, I think that helped some, I can at least get it started consistently now. It still has an inconsistent idle. If I pump the fuel line primer bulb it will both start easier and run smoother at low speeds. Why does the primer bulb have this effect?
Before what I thought was a hard start when warm, was actually the effect of being easy to start and idling smoothly from the initial priming of the fuel pump and carb and then hard to start when not using the primer a second time. In the past if I had squeezed the primer bulb, after stopping the motor it would probably would have started. So my question is why does priming a second time make it start easier and run smoother?