Oil Burners License Practice Test

Air leaks in the suction line can lead to pulsating oil pump pressure and a pulsating fire. When there are air leaks in the suction line, it disrupts the flow of oil to the burner. This inconsistency can result in variations in the amount of oil being delivered, which subsequently affects the combustion process. As the oil flow fluctuates, it causes the fuel pressure to change intermittently, resulting in a pulsating fire.

Maintaining a tight seal in the suction line is essential for ensuring a steady, reliable oil supply. Any breach that allows air to enter the system can lead to incomplete combustion or unstable burner operation. This instability manifests as fluctuations in pressure and inconsistent burning patterns.

Other options like high oil viscosity or excessive fuel temperature may affect combustion efficiency or system operation but are less directly linked to the specific pulsation effects described. Low fuel pressure could also lead to issues, but it would typically not cause the same pulsating effect that air leaks would, rather it may result in inadequate fuel supply.