An air lock in a fuel feed system is removed by using which of the following?

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RRB ALP Mechanic Diesel 21 Jan 2019 Official Paper (Shift 1)

Answer 1

Explanation:

Bleeding of the fuel system:

Bleeding is the process by which air, which is present in the fuel system, is removed by using a priming pump.
Air locking in the fuel system will result in the erratic running of the engine and may result in the stopping of the engine.
Bleeding is carried out by priming the filter.
A slight loosening of the bleeding screw allows locked air to escape as bubbles along with the fuel.
When locked air escapes and the system is free of air, the screw is tightened finally.

Priming pump:

A small, hand or electrically operated pump, is used to spray gasoline into the induction system of a reciprocating engine for starting the engine.
It is used to remove an airlock in a fuel feed system.
The fuel does not pass through the carburetor.
The pump must be locked during flight to avoid excessive fuel being drawn into the cylinders, especially at low power settings, which may result in an overly rich mixture and the realization of much less range than anticipated.