Join Date: Mar 2011
Location: Lake st. Louis, mo
Oil leaking onto spark plug threads
I just bought a 2005 Mazda 3 2.0L with 134,000 miles on it. I noticed it had a rough idle but yet got 350 mile on 3/4 of a tank of gas. So I went to change the spark plugs an noticed that when I took the boot off there was oil on it. When i took out the spark plug oil was dripping off of it. This is the same for all 4 of them. I looked into the hole that the spark plug screws into and there is oil in there too.
Anyone have an idea of why this is happening. The dealership did the oil change before I bought it and when I looked at the dipstick after the car had been sitting for an hour, I notice the oil level was over a 1/4 inch past the max mark going up the dipstick. Could this be the reason because someone over filled the oil?
Please help!!! Thank you