Buick Regal 1997-2000

Timing Belt

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Inspection



Only vehicles with the 3.4L (VIN X) Double Over Head Camshaft (DOHC) engine use a timing belt in conjunction with a timing chain. All other engines use combinations of sprockets and timing chains. Any engine's valve timing is critical to the engine's operation. This is especially the case of any belt-driven over head camshaft engine. In the 3.4L (VIN X) engine, the combination of four camshafts, 24 valves, and tight clearances means that if the belt should slip or otherwise get "out of time", expensive engine damage will result. The timing belt should be inspected for cracks, wear and other damage at 60,000 miles (100,000 km) and then every 15,000 miles (25,000 km). Replace the belt and/or tensioner as needed.

For the timing belt removal and installation procedure, please refer to Section 3 of this manual.



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Fig. Do not bend, twist or turn the timing belt inside out. Never allow oil, water or steam to contact the belt



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Fig. Check for premature parting of the belt



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Fig. Check if the teeth are cracked or damaged



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Fig. Look for noticeable cracks or wear on the belt face



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Fig. You may only have damage on one side of the belt; if so, the guide could be the culprit



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Fig. Foreign materials can get in between the teeth and cause damage