An oil leak can develop from the spark plug tube seals. Excess oil in the spark plug tubes can result in engine misfires and illumination of the Check Engine Light. Our technicians tell us that removing the valve cover and replacing the tube seals and cover gasket is necessary to correct this concern. Oil damaged spark plugs, ignition wires, and ignition coils will also require replacement.Google+
Car Problem Reports
Subaru Forester Worn Out Gaskets Allowed Oil to Seep Into Spark Plugs
Subaru Forester Problem
Engine Affected: 2.5L 4 Cylinder
Average Mileage: 95,581 mi (50,000 mi - 160,000 mi)
Visitor, 2009 Subaru Forester, 2.5L 4 Cylinder, 55,000 mi
Oil Leaked into Spark Plug Tubes causing misfire on Cyl 3,4. This was repaired then CC showed bad. After replacement of CC under warranty misfire problem is back. Dealer replacing Coil Pack (not under warranty).
Visitor, 2007 Subaru Forester, 2.5L 4 Cylinder, 84,000 mi
Oil is leaking into spark plug area. No legitimate explanation for this problem. It will be a necessary and expensive repair. I am very dissatisfied with Subaru. I will likely buy a Toyota next time.
Visitor, 2003 Subaru Forester, 80,000 mi
Oil leaked into spark plug tubes. Destroyed coil and wires. Replaced all.
Worn out spark plug tube gasket and or valve cover gasket allowed oil to seep into spark plugs, which damages the spark plug wires. Needed to replace the spark plugs, wires, & gaskets.
Visitor, 2002 Subaru Forester, 2.5L 4 Cylinder, 50,000 mi
Car is 12 years old but only has 80,000km on the clock. Townsville Australia.
Visitor, 2002 Subaru Forester, 2.5L 4 Cylinder, 120,000 mi
plugs arnt soaked in oill buy when i pull wire to change plug theres a small puddle of oil on top of ring
Visitor, 2006 Subaru Forester, 2.5L 4 Cylinder, 72,000 mi
Spark plug wires and rubber boots covered in oil. Diagnosis was that engine needed new cover seals. Not resolved yet.
Visitor, 2008 Subaru Forester, 2.5L 4 Cylinder, 63,000 mi
Pulled the boots to change the plugs and discovered oil all over them. New seals are on order now, looks like I've got another weekend project. I don't mind maintaining my vehicles but this is ridiculous! Why would Subaru allow for something like this to go on for so long???
Visitor, 2008 Subaru Forester, 2.5L 4 Cylinder, 104,800 mi
Check engine light began flashing and then shutting off - system code was for a misfire in cylinder two. Spark plugs and wires were covered in oil, replaced seals, plugs, wires and ignition coil. So far, so good.
Visitor, 2004 Subaru Forester, 2.5L 4 Cylinder, 160,000 mi
This is the problem...now need to fix