owners manual Volvo 240

owners manual Volvo 240 - year of production: 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993 - Volvo 240 owners manual EN

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text version of content this owner's manual page from owners manual to the vehicle Volvo 240, year of production 1974 - 1993:

Volvo 1990 240 Model pg. 64 Service requirements Engine Mechanical Components Torque manifold nuts The manifold nuts should be torqued at the 600-1,200 mile (1,000-2,000 km) 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 (48,000 km). 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. Exhaust Gas Recirculation (EGR) This system operates by returning some of the exhaust gases to the engine to be recombusted: since this lowers the combustion temperature the amount of nitrogen oxides released into the atmosphere is reduced. The EGR valve should be cleaned at the 60,000 mile inspection and thereafter cleaned every 25,000 miles (40,000 km). Timing belt The timing belt tensioner should be adjusted at the 600-1,200 mile (1,000-2,000 km) inspection. file:///K|/ownersdocs/1990/1990_240/90240_14.htm (1 of 7)12/30/2006 8:25:08 AM

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year of production from: 1974

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