Spark plug replacement
Although I passed smog test, I just want to keep maintaing the car well. Today I replaced spark plugs. I don't think the previous owner replaced spark plugs before. The odometer is 150K so plugs are worn out much. One surprise was that two spark plugs holes are full of engine oil. I heard about this and it supposes to be okay but curious why only two of them have deep oil in it. In the attached image, you can get some idea. My next project would replacing a fuel filter.
Last edited by jhkim; 01-27-2013 at 02:30 PM.