Oil not draining back down from heads

There are ports in the head that allow the oil to drain back into the oil pan. If the oil hasen't been changed on a regular basis, the ports plug up with sludge. As a result, the oil can't drain back. You need to remove the valve cover and clean the ports.

Well, you want to avoid allowing any sludge going into the oil pan. It can clog the screen on the oil pump. When you remove the valve cover, there should be a port at each end of the head. There could be one on the center. You will be able to see them. Do your best to avoid junk from going down the ports. See if it is slugde that you can easily remove or burnt on oil that will be hard and crusty. A vacuum would be a good idea while chipping away. After you get it cleaned, I would change the oil and filter.

Let me know how things go for you.

Joe