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 After replacing the oil seals, oil started coming our from the valve cover ventilation Excessive oil consumption and leak The tell-tale sign of a valve cover gasket that has lost its seal is an oil-covered valve cover or a burning oil smell when the engine is running. As oil leaks from a valve cover, it can contact a hot exhaust manifold and burn. A valve cover can leak oil while the engine is running, but not while the engine is at rest. What causes oil to leak from a crankcase through an air filter The oil doesn't leak from the air filter rather it would be right if we call it from the crankcase this is intentionally done so as to release excess pressure from the crankcase because of blow by that allows exhaust gases to seep through piston ring gaps it continuously fills up the crankcase with huge amount of exhaust gases and at a high pressure and this must be released somewhere either in the atmosphere or right in the cylinders so that they can be burned so engineers decided to...

WATER MIXING WITH OIL ISSUES ON JEEP Question: I've got an '84 CJ-7, 258 straight six. There is quite a bit of water-oil mixture in the valve cover. I've notice just a tiny bit on the dip stick. But, when I drop the oil there is no water. Also, there is lots of water-oil accumulation in the air cleaner. And I notice the radiator is short on water about every two months. I get the feeling I have either a cracked block or a blown head gasket but the engine is actually running under temp during normal operation.? A:There's no need to get physical. I don't believe that you're cooling loss is related to the watery-oil problem in the valve cover and air cleaner. It's not uncommon for a vehicle of that age to have small leaks that could account for the loss. The accumulation of water-oil in the air cleaner is a good indicator that the Positive Crankcase Ventilation (PCV) system is not functioning properly. Next, you're going to ask, "Where did the w...