Valve Clearance
WARNING: This page is about a different car, the 1997 Ford Ranger, 1997 Ford Explorer, 1996 Ford Ranger, and 1996 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Information on valve clearance check is not available from manufacturer.
The 4.0L engine uses nonadjustable hydraulic roller lifters and nonadjustable rocker arms. If lifters are excessively worn or noisy, repair or replace as necessary.