Blowh Head Gasket
Congealed oil is often caused by infiltration by water. If congealed oil is found in an engine, a seal or a water pump is defective.
engine burning oil
Intake gasket leaking on the inside of engine.
The oil pump. Mounted inside the oil pan, on the engine block.
What causes a misfire can be a number of things. But from what you are telling me, you may have water in your oil and maybe some bad gas inside your engine. If you have pumped in some bad gas, you may have a filed out the sparkplug at that #8 cylinder.
You can find out what causes oil to get into your water in most engine service manuals. You can find the service manuals at most local libraries.
You have water in your oil. Possibly from condensation. Run the engine only long enough to warm the oil and change it.
Mounted on the bottom of the engine block, inside the oil pan.Mounted on the bottom of the engine block, inside the oil pan.
You did not say what you are working on, YEAR AND ENGINE SIZE. But in most cases or designs the water pump can not leak oil into the coolant. The water pump has nothing to do with the engine oil. Does the engine have a engine oil cooler on it ? That would be 2 oil lines just above the oil filter that runs down the side of the engine oil pan a go to the radiator. There are tubes inside of the radiator that oil flows through and they are none to leak oil into the engine coolant that's inside of the RADIATOR. If they are leaking then REPLACE RADIATOR. BUT like I said I don't know what you are working on. Would like to help you with your problem, But need more INFO. NEUTZ.
That is part of the oil pump inside the engine.That is part of the oil pump inside the engine.
An oil pump mounted on the engine block inside the oil pan.
Bolted to the bottom of the engine , inside the oil pan