How do you fix engine oil leaking from my brake vacuum pump?

To fix engine oil leaking from your brake vacuum pump, first, identify the source of the leak by inspecting the pump and surrounding areas for cracks or damaged seals. Replace any worn or damaged gaskets, seals, or the entire vacuum pump if necessary. Ensure all connections are secure and check the oil level to prevent further leaks. Finally, start the engine and monitor for any signs of continued leakage before taking it for a test drive.