When investigating rough starts or delayed ignition, what condition should the electrode insulator be in?

When investigating rough starts or delayed ignition, it is essential for the electrode insulator to be in optimal condition to ensure proper spark generation for ignition. The correct condition of the electrode insulator should be intact and clean, enabling it to effectively facilitate the spark without interference.

An insulator that is heavily soiled or damaged can fail to conduct the spark efficiently, leading to ignitions issues. Therefore, ensuring that the insulator is removed and cleaned to a like-new condition is vital, as any contaminants can contribute to misfiring or delayed ignition events.

A clean insulator aids in maintaining the correct gap and allows for efficient combustion, minimizing operational issues. This emphasizes the importance of regular inspection and maintenance of the ignition components to prevent ignition problems in oil heating systems.