1. Worn or Damaged Crankcase Gasket: The gasket between the left crankcase and the engine block may have become worn or damaged, causing oil to seep through.
2. Loose or Damaged Crankcase Cover Bolts: Check if any of the bolts securing the left crankcase cover are loose or damaged. Tighten any loose bolts and replace any damaged ones.
3. Faulty Oil Seal: The oil seal around the crankshaft on the left side might be worn out or damaged, leading to oil leakage.
4. Blocked Crankcase Breather: If the crankcase breather is blocked or clogged, it can cause pressure buildup in the crankcase, leading to oil leaks. Ensure that the breather is clear and not obstructed.
5. Excessive Crankcase Pressure: Too much pressure in the crankcase can also force oil out through any weak points, such as the left crankcase gasket or seal. Inspect for any issues that may be causing excess pressure.
6. Worn or Damaged Cylinder Head Gasket: Although less likely, a worn or damaged cylinder head gasket on the left side of the engine could allow oil from the cylinder head to leak into the crankcase.
To pinpoint the exact cause of the leak and rectify the issue, it is recommended to thoroughly inspect the area around the left crankcase and any related components. If necessary, consult a professional mechanic for further diagnostics and repair.
