Massachusetts Oil Burner License Practice Test

What does a clogged fuel filter typically cause in an oil burner system?

1. Increased fuel efficiency

2. Reduced fuel pressure and overheating

3. Better combustion quality

4. Less noise operation

The correct answer is: Reduced fuel pressure and overheating

A clogged fuel filter in an oil burner system primarily restricts the flow of fuel to the burner. This restriction can lead to reduced fuel pressure, as the pump struggles to push fuel past the blockage. A decrease in fuel pressure often results in insufficient fuel reaching the combustion chamber, which can create an imbalance in the fuel-to-air ratio needed for proper combustion. As a result, the burner may operate less efficiently and may cause overheating due to the incomplete combustion or excessive cycling as the system attempts to stabilize. This situation can lead to potential damage to the burner if not addressed promptly. Understanding the role of the fuel filter is crucial for maintaining the overall health and efficiency of an oil-burning system.