EGR Opel Zafira B.

Good morning, I would like to know if there is any manual to clean the EGR of my sapphire, it is a 150 hp, thank you very much.

Well manual I don't think there is concrete. Disassemble it from the engine, be careful that at least in the Corsa it has a water pass, but it does not go much, it is in a high zone. Enter the joint and clean it with Scotbrite and the faces of the block and EGR. Clean the interior of the EGR where the carbon with gasoline is for example and brush, the most important thing is that the solenoid axis is clean so that it can move and do not give you the car failure.