When I run my generator for an extended period of time oil start seeping from a vent hole located a few inches above oil filler port. I am not sure if this is weather related it seems to starts when the temp goes below 20 degrees. I would like to know where I can download a service/maintenance manual. I have the operators manual

 

Is it a hole in the block? What model honda engine is on that?

 

Engine Model Number GX340 K1
There is a small hole in engine block near the top that the oil comes from.

 

sounds like the engine drain back holes are partially plugged and not allowing oil to properly drain back to the oil pan. is this a pressure lube engine or a dip and splash system. also what weight oil are you running in the engine?

if we're not supposed to eat animals why are they made out of meat?

 

Running 10W30 and it is a OHC engine I believe.

 

If it's a hole in the aluminum casting of the block...just a small drilled hole, I'm pretty sure that is not supposed to be there. I don't know how or why unless someone drilled it for who knows what. Is the hole threaded?