Why does the Han V400 suddenly start burning engine oil?
1 Answers
The reasons and solutions for the Han V400 suddenly burning engine oil are as follows: Check if the exhaust pipe is unobstructed: If it is obstructed, clean or replace it promptly. Measure cylinder pressure: If the cylinder pressure is normal, the issue is likely due to aging or damaged valve seals causing oil burning. Replace the valve seals. Remove the cylinder head for inspection: If the cylinder pressure in one, multiple, or all cylinders is below normal, remove the cylinder head to check whether the cylinder gasket is leaking oil, the extent of cylinder bore wear, piston wear, etc. If only the oil passage is leaking, replacing the cylinder gasket will suffice. If the cylinder bore or piston is excessively worn, it is recommended to overhaul and replace all cylinder liners, pistons, and piston rings. If the cylinder bore wear is minimal, replacing the pistons and piston rings may be sufficient.