Volvo 262 Owner's Manual page 55

1976 Volvo 262 264 265
Ignition timing
Distributor advance mechanism
The ignition timing should be adjusted every 15,000 miles. All adjusting work should be done with the
proper equipment. The distributor is one of the most sensitive engine units. Careless handling can lead to
decreased engine output and high fuel consumption or even serious damage to the engine.
The distribute advance mechanism should be checked every 30,000 miles.
Ignition wiring
The ignition wiring system composed of primary and secondary systems. The secondary systems are the
high tension leads connecting the distributor cap with the spark plugs and the coil.
These wires should be inspected at each engine tune-up, and should be replaced if cracked, frayed or
damaged from abrasion. It is important to clean all parts of this secondary system thoroughly because
dirt greatly reduces the available voltage to the spark plugs.
Distributor cap and rotor
Check the distributor cap and rotor for cracks, carbon formation, dirt and erosion.
pg. 53 Emission control systems
IV Engine Crankcase Ventilation System
Crankcase ventilation
The engine is provided with positive crankcase ventilation which prevents crankcase gases from being
released into the atmosphere.
Instead the crankcase gases are admitted to the intake manifold and cylinders.
Cleaning PCV valve
The calibrated positive crankcase ventilation valve should be removed and cleaned every 15,000 miles.
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