How to disassemble Citroen c5 intake manifold?

Cleaning method of Citroen c5 intake manifold is as follows: 1. First, remove the fuel nozzle, intake manifold and some accessories around the engine, especially the throttle; 2. Secondly, the ignition coil and spark plug should be removed, mainly to pump the cleaning agent directly into the combustion chamber of each cylinder; 3. Next, the cleaning agent will be pumped in from the air inlet and the spark plug device. Unlike previous cleaning agents, this cleaning agent is foam-like. The advantage of this form is that it can fully soak the carbon deposits attached to the cylinder and air intake. The cleaning agent has strong dissolving ability to carbon deposit. After soaking for a period of time, although the carbon deposit will not fall off by itself, the hard carbon deposit at low temperature can be easily removed with a small brush and finally blended.