Thank you very much for the information, I think my engine is a bit different ... will you have a motor photo and the location of the valve? Is it very complex to take it to maintain?
I send you two more diagrams. They are 4.6 liters engine. A cam tree for each bank. The eighth digit of the identification number of this engine is the letter "W". Czech please this number. Greetings
Here he tells you how to clean the EGR, it is quite easy, just try to take out the maximum possible of the condotes and holes. If you have them with air, salu2