2000 K2500 7.4L, 4x4 173k miles The lifter noise in my truck just wont go away. It usually makes the noise after it has sat for a few hours. When I drive it, it takes 2.3 miles before the noise goes away. I have tried cleaners and lubes, but I think I am going to have to replace. I probably should do all 16, but $20.00 ea is kinda stiff. Let alone the gasket kits. Anyone have a source for better prices? I called Autozone and Advanced locally. Or any other ideas to try?