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Why does Alice emphasize checking for black smoke from the exhaust?

Question Topic: Vehicle maintenance (PCV CPC)
Saved Questions | Completed Questions Incomplete Questions Question Topic: Vehicle maintenance (PCV CPC)
Give one answer
It indicates a potential problem and is an offence
It indicates optimal fuel efficiency
It's a normal part of vehicle operation
It means the vehicle is running faster
← Why does Alice follow manufacturer guidelines for service intervals? What engine type does Alice note is almost universal for heavy goods vehicles? →

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