Good day folks, I had a strange engine noise the other day, sounded almost like a diesel motor. Upon further investigation found that one of the spark plugs wasn't fully seated, torqued it in and fixed my prob. I have seen other people with same problem so as a suggestion maybe check your plugs before going to the stealer and they suggest you need a head or rebuild. Drove 2k miles after changing plugs before I heard the noise. It will be easy to spot with carbon around the affected area. Now my second problem is a window that doesn't want to stop when going up, any suggestions, helpful hints etc. Thanx