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Why is the small hole provided in the pump body?

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in Automobile Engineering by (80.5k points)
Why is the small hole provided in the pump body?

(a) A vent for the oil

(b) A vent for water

(c) A vent for air

(d) A vent for the fuel

I got this question in examination.

My doubt stems from Petrol Engine Fuel System topic in portion Fuel Supply System of Automobile Engineering

1 Answer

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Best answer
Right choice is (c) A vent for air

For explanation I would say: The small hole is provided as a vent for air in the pump body. This is an escape for excess air in the pump. So that pump does not get overloaded.

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