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    Engine 1999 Mustang V6 / Engine is Tapping but Not Knocking goes away after 1 - 5 mins idling / Possible Oil Pump?

    Hey guys i have an issue with my mustang this issue happened out of no where when i tried starting up my car like every other day, the engine is tapping but not knocking i had a mechanic look it at it and says its not a rod or a lifter, he said its most likely the oil pump but he has yet to open...