Oil leakage from the exhaust pipe of a diesel engine should not be taken lightly, as it can lead to serious consequences such as engine cylinder and bearing damage, and even engine failure.
Cause 1: Damaged valve oil seal
Solution: Inspect and replace the valve oil seal.
Cause 2: Worn valve guide
Solution: Inspect and replace the valve guide.
Cause 3: Excessive lubricating oil in the oil pan
Solution: Inspect and replace the lubricating oil.
Cause 4: Severe wear of the cylinder liner
Solution: Inspect and replace the cylinder liner.
Cause 5: Severe wear of the piston ring
Solution: Inspect and replace the piston ring.
Cause 6: Failure of the piston ring tension
Solution: Inspect and replace the piston ring.
Cause 7: Severe wear of the turbocharger seal
Solution: Inspect and replace the turbocharger seal assembly (repair kit).
Cause 8: Cylinder liner rupture (or rust perforation)
Solution: Inspect and replace the cylinder liner.
Cause 9: Cylinder head rupture (or rust perforation)
Solution: Inspect and replace the cylinder head.