EVAP system leaks can be challenging to locate, but the right know-how and equipment make the job manageable. Learning the roles of purge valves, vent valves, and sensors is key to pinpointing issues.

EVAP system leaks are one of the most common causes of a check engine light, yet they’re often misdiagnosed. From loose gas caps to cracked hoses, pinpointing the source requires a mix of OBD-II ...