Yesterday I heard a light knocking only to discover a spark plug that was loose and vibrating in its hole. This is the plug I pulled 5000 miles ago to check and when I reinstalled it I think I used Permatex Anti Seize on the threads, which is what it is meant for. Anyway, I tightened the plug (adding Anti Seize not at the time remembering having done it before or not). Today, after I drove 35 miles I found it loose again. I tightened it more than the last time. I think maybe I just did not tighten it enough before.
I don't think the Anti Seize should make it loosen and like the stuff because it also lubricates so the plugs thread in nicely, instead of before it would be hard to thread in with regular oil on the threads.
The plugs are in a '95 F150 4.9L and are taper, no metal crush washer or anything like that.
Thanks.
I don't think the Anti Seize should make it loosen and like the stuff because it also lubricates so the plugs thread in nicely, instead of before it would be hard to thread in with regular oil on the threads.
The plugs are in a '95 F150 4.9L and are taper, no metal crush washer or anything like that.
Thanks.