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When your engine turns over, there is an oil pump inside the engine that is being driven by the crankshaft. It is creating pressure by pumping oil throughout the engine. Most will achieve around 40 to 50 lbs. If there is a problem with any of the lines or gaskets in the system, it will leak when there is pressure. Try to locate the leak by washing the area that's leaking and watch it as someone turns the engine over. Most leaks of this sort aren't too hard to fix.

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Q: Why does oil leak when engine turns over?
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