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Home >> Mercury >> 1965 >> Caliente 4.7L Eng VIN D >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 221", 260", 289" V8 Engines >> Engine Notes >> Rear Main Bearing Oil Seal >> Testing Seal Installation

Testing Seal Installation

Squirt a few drops of oil into parting lines between cap and cylinder block from the outside. Blow compressed air against seals from the inside of block. If air bubbles appear in oil, seal leaks.