1994 Buick Century Owner's Manual - Page 273

a 6. 'Ikande Service -- Change both the fluid and filter 9. Exhaust G s Recirculation (EGR) System Inspection (2.2 L Code 4 engine only) *? --every 15,000 miles(25 0oO km) if the vehicleis Conduct theEGR system service as described in the mainly driven under one or more of these conditions: service manual. T purchase a service manual, see o In heavy city traffic where the outside "Service Publications" in the Index. temperature regularly reaches 90°F (32"C) or higher. 10.Air Cleaner Filter Replacement* Replace every -30,000 miles (50 0o0 km) or more often under dusty 0 In hilly or mountainous terrain. conditions. Ask your dealer for the proper 0 When doing frequent trailer towing. replacement intervals for your driving conditions. Uses such as found in taxi,police car or delivery -11. Fuel Tank, Cap and Lines Inspection*? Inspect service. ak fuel t n , cap and lines for damage or leaks. Inspect or any fuel cap gasket for an even filler neck imprint If you do not use your vehicle under any of these damage. Replace parts as needed. Periodic conditions, change both the fluid and filter every replacement of the fuel filter is not required. 100,OOOmiles (160 OOO km). 7. Spark Plug Replacement*-- Replace spark plugs in with the proper type. See "Specifications Chart" the Index. 8. Spark Plug Wire Inspection*'f'-- Inspect for bums, cracks or other damage. Check the boot fit at the distributor and at the spark plugs. Replace wires as needed. * An Emission Control Service. failure will the The U.S.Environmental ProtectionAgency or the California Air Resources Board has determined that the to perform this maintenance item not nullify emission warranty or limit recall liability prior to the completionof vehicle useful General Motors, however, urges that recommended maintenanceservices be life. all performed at the indicated intervals and the maintenance recorded in "Section E:Maintenance Record". be 271