Volvo 164 Owner's Manual - page 51
SERVICING
27 Check the spark plugs
The spark plugs should be changed every
12 000 miles (20000 km)
Tightening should preferably be done with
a torque wrench. When fitting new plugs,
be sure to fit the right type.
B30A
Bosch W 200 T 35 or corresponding
B 30 E
Bosch W 225 T 35 or corresponding
When changing the plugs, check that the
suppresser connectors are in good condi-
tion.
Cracked or damaged connectors
should be replaced.
Fuel
Fuel with an octane rating of at least 97
( ROT*) should be used for the B 30 E en-
gine. For the B 30 A engine fuel with an
octane rating of min 97 (ROT*) can be
used. When driving chiefly in town traffic,
fuel with an octane rating of 100 (ROT
*
) i s
recommended for the B 30 A engine. On
certain markets where it is difficult to get
fuel with these ratings, the engine can be
adjusted accordingly for lower octane fuel.
* ROT = Research Method
The cooling system is filled with coolant
through the filler opening on top of the ra-
diator. When this is being done, the heater
control should be set to max, heat to en-
sure that the entire system is filled.
Fill the radiator to the top and fit on the
cap. Then fill the expansion tank to the
"Max" level or slightly above this.
Run the engine for a short period, switch
off the ignition and allow the engine to
cool. Check that the radiator is full and
that the coolant in the expansion tank is at
"Max". If necessary, top up the system.
50
28-29 Ignition system
The distributor contact breaker gap and
the engine ignition timing should be check-
ed every 10 000 km (6000 miles). All ad-
j usting work should be done by a work-
shop with the proper equipment. The dis-
tributor is one of the most sensitive units
i n the engine and careless handling can
l ead to decreased engine output and high
fuel consumption or even serious damage
to the engine.