Automobile Engineering in ME
The effect of vapour locking on the brake performance is that the

Vapour locking has no effect on brake performance
Brakes function more effectively
Brakes fail completely
Brake operation is delayed after depression of the brake pedal

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Automobile Engineering in ME
The function of positive crankcase ventilation (PCV) system is that it

Returns blow by gases from the crankcase to the intake system
Mixes fuel with air
Promotes combustion by creating a swirling movement in the air-fuel mixture
Feeds blow by gases to the exhaust manifold

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