Buick Hideo evaporative emission EVAP purification solenoid valve control circuit, electrical fault.

Hello, first remove the throttle hose and open the throttle flap to see if there are many oil stains in the throttle. If the valve cover is directly replaced, the EVAP solenoid valve and the valve cover are integrated, and 1.6 British Cruze uses the same LDE engine. These two cars often break the engine, even the cylinder is serious. I've met several, design flaws. Ask the car master. 4S shop professional technician, 10 minutes to solve.