Valve Oil Seal

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Remove timing chain. Refer to REMOVAL .
Remove camshaft brackets and camshaft. Refer to REMOVAL .
Remove valve lifters.
Remove valve spring with Tool.
Before removing valve spring, fix valve as follows.

Piston concerned should be set at TDC to prevent valve from falling.

Remove spark plug, then install air hose adapter into spark plug hole and apply air pressure to hold valves in place. Apply a pressure of 490 kPa (5 kg/cm ² , 71 psi).

Fig 1: Applying Air Pressure To Spark Plug Holes
Courtesy of NISSAN MOTOR CO., U.S.A.
Remove valve oil seal.

Fig 2: Removing Valve Oil Seal
Courtesy of NISSAN MOTOR CO., U.S.A.
Apply engine oil to new valve oil seal and install it with Tool.

Fig 3: Installing Valve Seal Using SST
Courtesy of NISSAN MOTOR CO., U.S.A.
Reinstall any parts removed in reverse order of removal.