Yesterday, I changed out my OEM spark plugs to Denso Iridiums. All the other spark plugs look fine, but the forth plug(closest to the firewall) had oil on it's threads. Does anyone here know what that could be? I couldn't find anything about oil leaks in spark plugs with the "Search". I have a little over 14,000 miles on and it's a 2001 S2K. I change oil & filter at every recommended intervals. Any help would be appreciated.

 

oil in the spark plu bay usually means that the valve cover gasket is gone and needs to be replaced.

 

Maybe is the valve cover or part of the piston ring is chipped or worn out.

 

I use a funnel for pouring oil in. I will have to remove the new spark plug later to see if there is still oil on there. I hope it nothing major...or else it's time to take her into the dealer.

 

I am pretty sure that is normal. You are always supposed to put oil on the threads of the plugs before putting them in. Mine had a little oil on them in the threads and in my Civic samething.

Justin

 

I thought that you were suppose to put anti-seize on the thread, not oil???

 

I think you can put whatever can withstand alot of heat and won't dry up. You don't soak it with oil, just a tiny bit on the threads. Was your car running any different? As far as I know, and I've seen, it is normal.

 

Yes, a small amount of anti-seize is the right thing to use. It acts as a lube when installing and allows removal without he risk of damage. Anti-seize compound can work in the high temps of that area, oil will not hold up and is not recommended.

 

oil on the threads is problably caused by an o-ring around the tube that goes through the valve cover.