My 2011 MDX Adv/Ent is at 77,300 miles so I decided to replace the spark plugs this past Sunday. I started on the front cylinders, started from the passenger side towards the driver side. The same procedure was done on the rear cylinders. The numbers on the picture designated like so. The front went well, but with a slight hiccup. I couldn't pull the spark plug socket after installed a new spark plug. Luckily, I have duct tape laying around. I rubbed the sticky portion on the adapter extension, and I was able to pull the spark plug socket out. Now, for the rear, the first spark plug I pulled made my heart sank. The threads on the spark plug was coated with engine oil. The remaining two spark plugs were also coated with engine oil on the threads. This explained my oil consumption problem. This looks to be serious problem. The first question is how the hell the engine oil gets into the combustion chamber? If the cylinder gasket seal is weaken, the coil packs would have been soaked with engine oil, but all of the coil packs are bone dried. I did some googling, some said the intake ingests to much oil. Any ideas?
282.6 KB Views: 1,187