I have a 1992 Previa (which I bought new!) and am not sure if I should be concerned about the timing chain. I have regular oil changes but don't know if I should have it maintained somehow? It has 249,000 miles.
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1992 Toyota Previa
Question: Timing Chain
Answer #1patrick mannion from Greg Solow's Engine Room, September 14, 2010, 12:50Master
Frequent oil changes will certainly add to the life of the chain. The valves are shim adjusted and need periodic check/adjustment. With the valve cover off the timing chain and guides can be inspected but they are not troublesome or a failure item.