Question

Technician a says oily residue on hoses, components, or fittings indicates an area where refrigerant may be leaking. technician b says that low coolant level will result in the water pump only heating the engine, not the inside of the car. who is  correct?
neither technician a nor b
b. technican b
c. both technicians a and b
d. technician a​

Answer 1

Answer: Option D.

Technician A.

Explanation:

Oil residues on hoses, it's components or fittings indicate an area where refrigerant may be leaking.

An oil spot on the A/C hose is an indication of refrigerant leak in the system. Good oil levels are important for the system good performance. If the level of oil is to low, the compressor will not have lubrication and if it is too high, the heat exchange will affected which will lead to poor air conditioning performance. If a leak is formed on A/C hose, an oil spots that collect dirts will disappear. An refrigerant leak detector will help verify if there is no leak in the system.

So Technician A is correct.