Major service, every 60,000 km or 48 months.
1. This procedure is basically the same as shown in Chapter 30. However, on these models, the spark plug cover must be removed from the camshaft cover before the spark plugs are removed.
2. Be careful when removing and installing the spark plug on these engines (see illustration). Cracks in the ceramic part of the spark plug can cause a partial or complete misfire
3. Special tool (Opel No. KM-194-B) reduce the risk of spark plug damage (see illustration).
4. After installing the spark plug, be sure to replace the spark plug cap.
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