Dictionary

Become an expert on all things motoring! This dictionary of terms and phrases will help you understand exactly what things are, what gets done and why.

Random definitions

• Under-inflation

  Tyre under-inflation can seriously affect the performance and fuel efficiency of your car. Under-inflation causes your tyres to lose shape under the pressure of the road. This increases the surface area of the tyre from the amount it is designed for, which wears your tyre significantly faster.

• Valves

  There are a number of valves that help maintain the operation and efficiency of your car’s engine. Fuel-air mix is allowed into the combustion chamber by the intake valve, and the burnt fuel-air mix is released into the exhaust system by the exhaust valve release. Replacing these valves can be quite a difficult process, because the cylinder head must be detached and taken apart.

• Water Pump

  The water pump assists with cooling the engine by pumping liquid from the cylinder head and engine to the radiator. Your water pump may need replacing if your car is leaking coolant or overheating.

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