My Mustang's D1402 engine seems to be experiencing oil puking issues from the breather hose after reaching operating temperature, resulting in a noticeable decrease in oil levels within a few hours of use. Some oil vapor or smoke can also be seen coming out of the hose. Despite the concerns, the engine has shown resilience in cold temperatures, indicating it might not be too worn out. I am currently using synthetic Rotella 10-30 oil. The issue seems to stem from a potential design flaw in the oil separator/baffle within the valve cover, which struggles to handle oil carry over as blow-by occurs. I am considering inspecting the valve cover to ensure everything is intact and exploring modifications such as a larger hose or a catch can with a drain back hose for oil return. Your insights and suggestions are greatly appreciated.
If you notice the vent hose blowing out with enough force to lift the oil filler cap off the valve cover opening, it's a sign that your engine may need attention. Starting the engine with ether can cause irreversible damage.
I inspected the oil fill cap as per your instructions and found no pressure when the cap is placed on the cover, regardless of engine speed. Additionally, there is no vapor or air escaping from the fill hole.
Answer: - The issue could be stemming from a potential design flaw in the oil separator/baffle within the valve cover, which struggles to handle oil carry over as blow-by occurs.
Answer: - Consider inspecting the valve cover to ensure everything is intact and explore modifications such as installing a larger hose or a catch can with a drain back hose for oil return.
Answer: - It's worth noting that the synthetic Rotella 10-30 oil being used may not be the direct cause of the issue, but it's essential to ensure that the oil being used meets the engine's requirements and specifications.
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