2.6 Quiz on Vehicle Spark Plugs

What is the purpose of a spark plug in a vehicle?

• To increase air pressure in the tires

• To filter the engine oil

• To cool down the engine

• To ignite the fuel mixture in the combustion chamber

Which of the following is NOT a main component of a spark plug?

• Steel core

• Ceramic insulator

• Ground electrode

• Terminal for battery connection

What equipment is commonly used to make spark plug measurements?

• Pliers

• Feeler gauge

• Hammer

• Screwdriver

What determines the heat range of a spark plug?

• The number of electrodes

• The outer insulation shape

• The size of the spark plug

• The color of the spark plug

What happens if a spark plug has a too short range?

• It causes rough running

• It requires higher voltage to jump the gap

• It transfers heat faster

• It reduces radio interference

Which type of spark plug size is currently the most commonly used?

• 16mm center line with gasket

• 14mm center line with flat seat

• 12mm tapered seat

• 18mm tapered seat without gasket

What is the function of recording a vehicle spark plug change report?

• To calculate the mechanic's salary

• To schedule future maintenance appointments

• To record information about the vehicle owner and service details

• To track the mechanic's lunch breaks

What is the correct air gap of a spark plug important for?

• To reduce fuel consumption

• To achieve optimum engine performance

• To increase carbon deposits

• To prevent radio interference

What does the heat range of a spark plug indicate?

• How fast the vehicle can accelerate

• How well the spark plug can transfer heat

• The number of spark plugs needed

• The type of fuel required

Which standard provides methods of test for full-flow lubricating oil filters for internal combustion engines?

• ISO 9001:2015

• MS ISO 4548-1:2005

• MS 827:2002

• ISO 14001:2015