Enough air-found mixture can seep around the throttle value and through the idle system to maintain the dieseling. 围绕在节气门处有足够的空气燃料混合气经怠速系统泄漏过来助长了熄不了火现象。
A nearly constant air-fuel ratio is maintained by the main metering system from part-to-wide-open throttle. 从节气门部分开启到全部开启，主计量系统保证了空燃混合比几乎恒定。
