Nissan Exhaust Tick

This bulletin applies to 2005-2008 Nissan Frontier models equipped with the QR25DE engine, and built before July 12, 2006. The issue may involve a ticking noise that sounds like spark knock, when accelerating 1/8 to 1/2 throttle opening.
If you confirm that the problem is not spark knock, install a new exhaust manifold, as the original manifold may be cracked or warped. Install with all new gaskets and fasteners.
PART ...................................................... P/N ..................... QUANTITY
Exhaust manifold w/catalytic converter...... 14002-EA00A........... 1
Exhaust manifold to head gasket.............. 14036-6N200 .......... 1
Exhaust manifold to front pipe gasket........ 20691-30P00 .......... 1
Manifold to head nuts................................. 14094-31U00 ........... 5
Heat shield to manifold bolts...................... 14069-EA01 ............. 4