Problem Reports
Toyota 4Runner
Report: Failed Timing Chain Guides May Cause Rattling Noise
Toyota 4Runner Problem
8 Reports
Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
Verified
The timing chain can develop a rattling noise caused by failing timing chain guides. This is often due to extended mileage intervals between oil changes that allows the oil to become dirty and abrasive which wears away the timing chain guides until they fail. The timing chain and guides should be inspected at each valve adjustment, otherwise serious engine damage may result.
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