Regularly check valve clearance so valves don't become too tight on Toyota 4Runner

Problem Description and Possible Solution
It is important to regularly check the valve clearance as the exhaust valves may become too tight. This will lead to valve failures which are expensive to repair.
Problem Data
RepairPal Verified
Average mileage: (–)
8 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997
8 people reported this problem