Citroen throttle failure vehicle flameout

Carbon deposition, too large throttle opening.

1. Carbon deposits usually appear on the inner wall of throttle, intake valve head, intake port, piston top and combustion chamber. Excessive carbon deposition on the inner wall of solar terms will lead to insufficient air intake, difficult start-up or easy flameout at idle speed.

2. After the water temperature reaches the normal working temperature of the engine, the throttle valve plate is repeatedly adjusted by the computer because the throttle valve opening is too large to exceed the normal idle speed value, resulting in the idle speed rising and falling. In fact, it is not only the throttle valve that is the easiest to deposit carbon, but also the head of the intake valve (the end of the intake port).