Here are some more. Notice, how the center electrode is burnt off on quite a few of them. Also, just looking at them you can see which ones were lose. I am absolutely amazed that this problem is not more common. I had to do quite a bit of digging to find this. I am sure there are a lot of people out there that have this noisy engine and have ford make all kinds of repairs. I had taken mine to the dealer here for an oil change (too old for that myself and the dealer is so cheap - $25.00) and the service advisor immediately pointed to the Cam Phazers. What a money maker!!!!! You would not believe the difference this made. Amazing:lol: