Valve Spring: Pressure
WARNING: This page is about a different car, the 2002 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
Check valve spring pressure at specified spring height.
Pressure:
Standard
202 N (20.6 kg, 45.4 lb) at height 37.0 mm (1.457 in)
Limit
More than 436 N (44.5 kg, 98.1 lb) at height 28.2 mm (1.110 in)
If it exceeds the limit, replace spring.