Originally Posted by Chris_87_300D

So, could I have messed up the timing as a result of setting my injectors to a higher pressure? I.e., maybe it takes a split-second longer for the pump to build up the add'l pressure to pop the injectors so now my timing is off? And, if so, how bad for the engine in terms of wear, etc.?

Also, it does start a little rougher than it used to. I replaced all of the glow plugs at the same time as this work and usually after a GP replacement it starts right up when the light goes off (after just a few seconds). Now I need to wait until the SRS light goes off (about 3x as long) or it starts pretty rough (acts like a plug is out).

What is "nailing" exactly? I realize that a sound file is pretty hard to diagnose but do you hear it here? I have seen causes for nailing (retarded or advanced IP timing, fuel leaks, etc.) on the forum but I don't know what it sounds like or what the result is to the engine over a long period of time.