Volvo 240 - Manual (Page 72)

1987 Volvo 240
B230F
1. PCV nipple
2. Flame Guard
3. Oil trap
PCV system, B230F engine
The PCV nipple in the intake manifold should be cleaned after 60,000 miles (100,000 km). It is recommended that the flame guard be cleaned
every 20,000 miles (32,000 km)
pg. 67 Servicing
Engine Evaporative Emissions
Evaporative control systems
Vehicles intended for the North American market are equipped with a fuel vapor evaporative control system, which prevents gasoline fumes
from being released into the atmosphere.
The system is comprised of an expansion chamber in the fuel tank, a roll-over valve on the cross member in front of the fuel tank, and a
charcoal canister with built-in vacuum valve. The components are interconnected by hoses which channel fuel vapor from the gas tank to the
charcoal filter where they are stored until the engine is started and then drawn into the engine fuel induction system.
Engine Ignition
Change spark plugs
The spark plugs should be changed every 30,000 miles (48,000 km).
However, prolonged city driving or fast highway driving may necessitate changing spark plugs after 10,000 miles (16,000 km) of driving.
When installing new plugs, be sure to fit the right type and use the correct torque, see "Specifications". When changing the spark plugs, check
that the suppressor connectors are in good condition. Cracked or damaged connectors should be replaced.
When changing spark plugs, clean the cables and cable terminals, also the rubber seals. If the car is driven on roads where salt is used during
the winter, coat the cables with silicone.
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