Car Tuning Car Maintenance 2

Question 1

What does a mechanic mean when they say your brake rotors are 'below minimum thickness'?

Accepted Answer

The rotors must be replaced immediately

Answer

Rotors below minimum thickness cannot safely dissipate heat and may warp or crack under braking stress.

Question 2

Which symptom most strongly indicates worn CV axle boots on a front-wheel-drive car?

Accepted Answer

Clicking or popping noise when turning

Answer

Torn CV boots allow grease to escape and dirt to enter, causing the clicking sound characteristic of a failing CV joint.

Question 3

When should you replace your car's cabin air filter?

Accepted Answer

Every 15,000–25,000 miles or annually

Answer

Most manufacturers recommend replacing the cabin air filter every 15,000–25,000 miles to maintain HVAC airflow and air quality.

Question 4

What is the purpose of a PCV (Positive Crankcase Ventilation) valve?

Accepted Answer

It vents harmful crankcase gases back into the intake manifold

Answer

The PCV valve routes combustion blowby gases from the crankcase back into the intake to be burned rather than vented to atmosphere.

Question 5

How can you verify that your car's thermostat is functioning correctly?

Accepted Answer

Confirm the temperature gauge reaches normal operating range and stabilizes

Answer

A working thermostat allows the engine to reach normal operating temperature quickly and hold it steady.

Car Tuning Practice Test