 So what I'm saying is your leak down test may work in some cases, but maybe not in this one. And this, since it's just those two cylinders, probably not a timing chain issue or anything? No. You know, I'm kind of leaning towards an injector issue. You may even swap them around to a different cylinder. Yeah, he's replaced injectors, but try moving some around. And when you take the rail off, dump it out, clean it out really good, make sure that it's clean in there. If the problem moves when you move injectors. I just put an injector in one of these engines yesterday because it was dead on one hole. What about an injector connector?