smj999smj· Premium Member
It's an issue for many, but not all, 2005-2010 Frontiers/Xterras/Pathfinders with the VQ40DE engine in North America. The timing set was made by Borg-Warner and as the dies that were used for stamping the links of the upper timing chains wore, they started stamping out links that had edges that would cut through the plastic, upper tensioner faces. How much wear was on the tooling at the time of the links stampings determined the quality of the link stamping, which is why some chains start making noise at low miles, some at high miles and some never at all. The updated chains should fix the problem permanently. There was a TSB on the issue, but warranty was limited to the factory 5-year/60,000 miles unless you had an extended warranty to cover it.