2006 Civic EX - Oil in Spark Plug Tube

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Oct 20, 2018

tb24

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2006 Civic EX - Oil in Spark Plug Tube

First time posting here. Son's 2006 EX CEL came on - P0302 Cylinder 2 misfire. Pulled the ignition coil from cylinder 2 and found a pool of oil at the bottom of the tube. The rubber end of the coil was loose at the bottom of the tube. So ignition coil certainly bad but what would cause the oil to pool up at the bottom of the spark plug tube?

Noticed after researching this was an issue with the earlier model Civics but not on the 8th generation.

Any help or guidance would be appreciated.

Thanks!

Oct 24, 2018

GolNat

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Re: 2006 Civic EX - Oil in Spark Plug Tube

If it’s similar to a 7th gen it might have spark plug seals that are going bad. Easy job to do along with valve cover gasket.

Oct 24, 2018

ezone

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Re: 2006 Civic EX - Oil in Spark Plug Tube

Engine oil can't get into the plug tube on the 1.8 Liter R engine via valve cover gasket, it's location is not even close.
Loose spark plug might let combustion gases seep past the threads and accumulate soot and moisture in the tube