Replacement method of Peugeot 408 air intake solenoid valve

Find the solenoid valve next to the throttle, then remove the solenoid valve with a vise, and unscrew the screw at the top of the solenoid valve with a needle-nosed pliers to open the solenoid valve and replace it. Dismantling the valve core will be accompanied by a large number of carbon particles, which are the objects we want to remove; Clean the valve body with alcohol and reinstall it.

principle of operation

When braking, the engine exhaust pipe is closed with a valve, and the engine crankshaft is forced to rotate; During the compression and exhaust strokes, the air is compressed in the cylinder, which increases the exhaust resistance of the piston and reduces the vehicle speed through the transmission system. When the exhaust passage is closed, the fuel supply is cut off. Therefore, using this kind of brake on long slopes can not only slow down safely, but also save fuel.

In addition, when driving on ice and snow roads, using this brake can also prevent the car from slipping. Exhaust braking is mostly installed on diesel vehicles, because diesel engines are easy to stop supplying oil when working in braking state. There are generally two kinds of exhaust braking: electric type with solenoid valve and vacuum type with vacuum cylinder.