C70Section 2 Engine

Section 2 Engine

Group 20 General

Lead free gasoline must be used. Can bedriven on 91 octane lead-free

Performance, compression ratio, octane no

Other general data

C70

Group 21 Engine block

Group 21 Engine block

C70Group 21 Engine block

C70Group 21 Engine block

C70Group 21 Engine block

C70Group 21 Engine block

C70Group 21 Engine block

C70Group 21 Engine block

C70Group 22 Lubrication system

Group 22 Lubrication systemGeneralOil capacity and quality, see Section 1Service and maintenance, Group 16 Lu-brication.

Oil pressure with warm engine and new oil filter

Group 23 Fuel system

C70Components

CO content and idling speed cannot beadjusted, only checked. Measured up-stream of the catalytic converter

Heated Oxygen Sensor connected.

Automatic transmission : Gear selectorlever in position P during test

Components

C70Components

C70Components

C70Group 25 Intake and exhaust system

Group 25 Intake and exhaust system

Turbo engines

C70Group 26 Cooling system

Group 26 Cooling system

General•

Never top up with water only. Use Volvooriginal green coolant thinned withpure water to a ratio of 50/50. This mix-ture prevents corrosion and damagefrom freezing.

•

The coolant does not usually need re-placing. In case of large repairs whencoolant needs to be drained, newcoolant must be used because the oldhas been exposed to oxidation and dirt.

•

Clean the cooling system when replac-ing coolant. Use lubricant 11 61 328.

C70Group 28 Ignition system

Group 28 Ignition system

Can not be adjusted, only checked

Components

General

Ignition coil/injector driver

Spark plugs

Distributor arm (rotor)

Ignition cables

C70

Components

Knock sensor (KS)

Engine speed and position sensor (flywheel)

Camshaft position (CMP) sensor

Relay, engine cooling fan (FC)

Relay, AC

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