Why pressure test the cooling system?
Check for leaks
The thermostat is an electronically controlled valve. True or False?
False
Famous air-cooled car
Porsche Carrera 2.7 RS
Main function of the cooling system
Prevent engine from over-heating
R.S
Rally Sport
Optimum engine running temperature
88-93 dc
This component increases the boiling temperature of the coolant b a further 25 dc
Pressure cap
Name of the component that blows warm air into the car
Heater Matrix
What could a fallen core plug indicate?
Sign that the coolant has frozen
Another name for radiator
Heat Exchanger
Effect of 'red heat' on oil
Cause it to burn
This component circulates coolant around the engine
Water Pump
Some engines coat the inside of the cylinder head with this material as it is a poor conductor of heat
Ceramic
Why are radiator hoses made from rubber?
Flexibility and expansion
Term used to describe the effect of super hot exhaust gasses on metals
Red heat
Term given to fuel/air mixture igniting before sparking from the spark plug
Pre-ignition
Cooling system capacity - 6.3 litres on a 50% mix. How much coolant to water is needed?
3.15 litres of each
Percentage of the heat that gets transferred into kinetic energy
33%
Temperature controlled valve
Thermostat
Used to test specific gravity of antifreeze
Hydrometer
2 main ingredients of coolant
Water and antifreeze
What is a 'corrosion inhibitor'?
Additive
Main ingredient of antifreeze
Ethylene Glycol
Secondary function of the cooling system
Keep the engine running at a constant temperature