Engine Oil Leak-Testing Procedures

1. Open the air supply valve until the pressure gauge maintains 21 kPa (3 psi).
2. Inspect sealed and/or gasketed areas for leaks by applying a solution of liquid detergent and water over areas for formation of bubbles which indicates leakage.

Examine the following areas for oil leakage:

Leakage Points-Underhood
- valve cover gaskets
- intake manifold gaskets
- head gaskets
- oil bypass filter
- oil filter adapter
- engine front cover
- oil level indicator tube connection
- oil pressure sensor
- oil pan gaskets
- engine front cover gasket
- crankshaft front seal
- crankshaft rear oil seal
- crankshaft main bearing cap side bolts