owners manual Volvo 242

owners manual Volvo 242 - year of production: 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993 - Volvo 242 244 245 owners manual EN

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text version of content this owner's manual page from owners manual to the vehicle Volvo 242, year of production 1974 - 1993:

1978 Volvo 242 244 245 pg. 50 Emission control system I Engine Mechanical Components Torque manifold nuts The manifold nuts should be torqued at the 600-1,200 mile inspection. A loose manifold could alter air/ fuel ratio and cause an increase in emission and/or poor driveability. Valves The valve clearance should be checked every 30,000 miles. Vacuum fittings, hoses and connections Unstable idle, misfiring or poor emission control is often caused by leaking vacuum hoses or connections. Check hoses and connections on distributor vacuum unit, EGR valve (where applicable) and connections on heater control servo systems and hydraulic brake servo. Camshaft drive belt The camshaft drive belt tensioner should be adjusted every 15,000 miles. Replace the drive belt every 45,000 miles. An incorrectly tensioned drive belt will impair exhaust emission as the valves will open and close incorrectly. II Engine Fuel System Fuel (91 octane ) Unleaded fuel permitted for all models and required for certain models (with catalytic converter). A label on the instrument panel and on the rear fender, near the filler outlet, will remind of this requirement. It is unlawful to dispense leaded fuel into a vehicle labeled "unleaded gasoline only". CI system The B21F engine is provided with a fuel injection system called the CI system (Continuous Injection). Fuel injectors are open and inject fuel as long as the engine is operating. This system has few moving parts, is reliable and meets the exhaust emission standards at maximum efficiency. Air supplied to the engine is continuously measured and determines the amount of fuel injected. The air flow is regulated by the throttle valve. The air flow sensor and the fuel distributor are integrally built as a single unit. A lever is actuated by the air flow to produce continuous fuel distribution. file:///K|/ownersdocs/1978/1978_242_244_245/78242244245_03a.htm (10 of 15)12/22/2006 10:11:27 PM

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year of production from: 1974

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