What causes engine oil to leak on the spark plug on a Daewoo Matiz with a 800cc 3 CYL engine?

Engine oil leaking onto the spark plug in a Daewoo Matiz with an 800cc 3-cylinder engine is typically caused by a faulty valve cover gasket or worn-out spark plug tube seals. These components can allow oil to seep into the spark plug wells, leading to poor engine performance and potential misfiring. Additionally, excessive engine wear or high oil pressure may exacerbate the issue. Regular maintenance and timely gasket replacements can help prevent this problem.