Small Engine Troubleshooting Problems? Ask a Mechanic Now.
!! does the engine now start, or is it locked up?
If it turns, get the oil level down to the full mark and try it.
Get the oil down to the full mark and see if the noise goes away. If it still has noise, see if you can identify which cylinder side, and remove the valve cover on that cylinder, to check the valves. May have a stuck valve!
Yes, I would want to locate the noise , as if it is a valve, it will get worse and destroy the engine,
O> I will be here.