Deceleration Valve: Description and Operation
Idle Air Components:
An overrun valve is fitted to intake manifold under idle air valve. At high RPM, when throttle is closed, overrun valve opens and supplies extra air to engine, causing lean mixture.
An overrun valve is fitted to intake manifold under idle air valve. At high RPM, when throttle is closed, overrun valve opens and supplies extra air to engine, causing lean mixture.