Originally Posted By: Tim H.
Does this engine suffer the "disintegrating front cat" issue that I know some 4cyl cars suffer from, where the cat starts falling apart, and the engine starts ingesting it, causing failure? Could this be an early start to that?
I believe that issue was somewhere around 2003 to 2005 on Altimas and Sentras. The power valve screws were prone to falling out on those vehicles, and such an issue also occurs with 2001-2004 Pathfinders but the issue is significantly rarer.