Pressure Method

When diagnosing engine oil leaks, it is important that the source and location of the leak be positively identified before service. The following procedure has been found to be very effective and requires a minimum of equipment. Prior to using this procedure, it is important to clean the cylinder block, cylinder heads, valve covers, oil pan and flywheel housing areas with a suitable solvent to remove all traces of oil.

The Rotunda Pressurization Kit 014-00705 or equivalent can be used to test for engine oil leakage.

1. Plug all crankcase openings except the one used for connecting the leakage detector.
2. Connect the leakage detector to a crankcase opening (oil level indicator tube is convenient) and adjust the air pressure to 5 psi.
3. Using a solution of liquid soap and water, brush the solution along all of the gasket sealing surfaces and bearing seals. Look for bubbles or foam. If bubbles or foam are present, repair the leak as necessary.