Info - Diagnosing Engine Oil Leak Into Spark Plug Wells

The following information should be used when diagnosing an external engine oil leak into the spark plug wells. To prevent unnecessary warranty expenses, the following should be observed.

The oil may be coming from around the spark plug pipe which is press fitted into the cylinder head.

If your diagnosis confirms spark plug pipe leakage as the cause, do not attempt to repair. No fix is available, other than replacing the cylinder head.