2. MaintenanceThere are routine maintenance operations related to the fuel system that should be performed at a specified mileage or time interval. These items, listed below, are covered in LUBRICATION AND MAINTENANCE or, where indicated, under the boldface numbered headings in this section of the manual. |
| 1. | Servicing the air filter |
| 2. | Replacing the fuel filter |
| 3. | Inspecting the fuel system for leaks |
| 4. | Checking idle speed and idle mixture (CO). 5.6 (CIS), 6.7 (CIS-E and CIS-E Motronic), or 7.6 (Digifant II) |
| 5. | Checking the on-board diagnosis system. 3.4 (CIS-E Motronic), 7.7 (Digifant II), or 8.1 (Digifant I) |
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