What causes ignition coils to go bad?

Ignition coils can fail due to several factors, including heat exposure, which can cause insulation breakdown, and electrical surges that may lead to coil burnout. Additionally, wear and tear from normal operation, exposure to moisture, or oil contamination can also degrade the coils over time. Poor connections or faulty spark plugs can exacerbate the stress on ignition coils, leading to premature failure. Regular maintenance and timely replacement of related components can help prolong their lifespan.