72 318 Scamp. Low oil pressure 1 minute after startup.

jimjimjimmy said

maybe i'm wrong here but the oil leaves the oil pump and goes through the filter first before it goes through the engine ?

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Yes... Now, if the filter element plugged up too much with pulverized bits, it's conceivable that the filter bypass opened and let the bits through. It's impossible to say if that may have happened or not.