Incredible Check Engine Light When Starting Car Ideas. If the light begins flashing, however, it indicates a more serious problem, such as a misfire that can. If the gas cap is loose or damaged, this seal is broken and fuel vapor can escape.
It can be hard to figure out what. The check engine light looks different in different car. Usually, this warning is in the shape of a silhouetted engine, though sometimes it's an even harder to miss all.
