An oil leak at the spark plug area (spark plug tubes) can be caused by a failing valve cover sealing rubber and/or camshaft holder o-ring. The sealing rubber and o-ring will need to be replaced to address this issue.
Problem Reports » Oil Leak at Spark Plug Area Due to Failing Valve Cover Sealing Rubber/Camshaft Holder O-Ring
Car Problem Reports
Honda Civic Oil Leak at Spark Plug Area Due to Failing Valve Cover Sealing Rubber/Camshaft Holder O-Ring
Honda Civic Problem
Engine Affected: 1.5L 4 Cylinder
Average Mileage: 135,666 mi (110,000 mi - 180,000 mi)