If you overfill your engine, will the engine push the oil out to a Blow by Valve? my oil pressure light came on so I added oil. turns out it wasn't low .now there's oil coming out the back of the motor. I just replace the O-ring gasket in the distributor for a leak ,now it's leaking up both sides of the engine.

 

There is no such valve. Open the drain plug and let some oil out until it is the proper level.

There are 3 major parts on the back of the engine that hold oil under pressure-- the oil filter, the oil pressure switch directly above the oil filter, and the VTEC solenoid unit on the head near the distributor. Any one of those can suddenly start leaking severely.

 

You're about to blow all your seals....don't ask me how I know.