Volvo 740 1989 Owner's Maintenance Manual page 98

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1989 Volvo 740
The battery is poorly charged or dead
Start the vehicle by using an auxiliary battery.
Recharge the battery.
Find out why the battery is poorly charged.
Poor contact in the electrical system
Check all leads to spark plugs, coil, distributor, battery and starter motor.
No fuel reaching engine
Check that there is fuel in the tank.
Check that none of the hoses in the fuel system are loose.
Check that the fuses for the fuel pump are not faulty, fuses No. 1 and 11.
Faulty ignition system
Check spark plugs, electrode gap should be 0.028" (0.7 mm), and wipe clean.
Check distributor cap for cracks and wipe clean on inside.
Check that all electric leads in the ignition system are clean and correctly connected.
Misfiring and erratic engine operation
Faulty ignition system
Check spark plugs, electrode gap should be 0.028" (0.7 mm), and wipe clean.
Check distributor cap for cracks and wipe clean on inside.
Check that all electric leads in the ignition system are clean and correctly connected.
Ice in injection system
Park the vehicle in a warm garage and add a fuel line de-icer to the fuel system.
Blocked air Filter/fuel filter
Change filter
pg. 85 Service diagnosis
Tire imbalance or vibration during driving
Wheel imbalance
Have the wheels re-balanced.
Level of oil in power-assisted steering pump too low
Check and fill oil, see section "Power steering fluid".