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When you open the oil cap and feel pressure, it indicates that there may be a buildup of gases or vapors within the engine's crankcase. This pressure can result from normal engine operation, where combustion gases escape past the piston rings into the crankcase. However, excessive pressure might also signal issues such as a clogged positive crankcase ventilation (PCV) system or internal engine problems. It's important to monitor this condition, as it can affect engine performance and longevity.

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4mo ago

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Can a plugged tail pipe cause oil to spray out of the oil cap?

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