Pumping oil out of the valve cover vent

My 93 mitsubishi after it starts to warm up is pumping oil out of the crank case vent on the valve cover.
This machine has some low compression on 2 and 3 cylinders, but it does not smoke. The previous owner says he replaced the head gasket, but I have not removed the head yet.
The head did have a hole in it when I bought it right next to a valve spring. At that time I had about 5 psi in that cylinder and now I have around 40 psi(which I know is very low) after I did a JB weld "fix" on it.
It has been running ok, but this is a new development. I am still unsure weather it is the head/rings or both. The no smoking out the exhaust is the part that is confusing me. I did check and make sure the JB weld spot is not leaking by turning it over with the valve cover off. These things are pretty simple machines, but any help or ideas would be appreciated. Thanks.

 

Sounds like significant blow by which I know you explained with the low compression. The blow by is not allowing the oil to return to the pan maybe

 

I guess I need to tear in to it. It still bugs me that it doesn't smoke at all.

 

Also, the plugs are not oil soaked. They show rich a/f ratio with black soot.

 

Right! Because all of the oil is under the valve cover after running for a minute, not in the pan.

 

So, I did a seafoam treatment from below and from above (seeing if I could unstick the rings on cylinders 2&3)and the thing would not fire off for anything. Barely a sputter, when before it would at least fire up.
After many checks and re-checks of timing, spark, fuel, re-tapping a spark plug hole, distributor, and thinking I was loosing my mind, I found a quarter sized hole in the intake manifold.
The former owner really did a number on this thing. I put some steel stick on it. Waited a couple hours and bang. Fired right up.
That is why I could not get the jetting right. It would never do the same thing twice. It also had one of the ports on the valve cover completely plugged. Now it is not shooting oil out of the crank case vent anymore.
This thing probably needs re-built , but at least you can drive it. I had it up to 55 mph today. whew.

 

Good shit man. These things are a blast to romp around. Especially after putting your time into them

 

Holy shit, interesting find. So you initially had a hole in the head and then also found the same in the intake? The confirms my thought, we all need to have a proctologist on call incase a piston rod shoots out the block right into our ass

 

It has been interesting for sure. I did not pay much for the little guy, so I am in pretty good shape, but it has been testing my patience at times.
The former owner took a lot of things apart and did not put most of it back, so I have been slowly going through it. It is running pretty good now, for only having about 2 cylinders worth of compression.