...EGR valve with carb cleaner and they will work again, how long is unpredicatable I had one go and cleaned it lasted 8mths! so certainly worth a try before buying another. If you need more info please ...
...Remove the upper intake and replace only port gaskets (9H486) and isolator bolt assemblies (9S479). The new isolator bolt assemblies use a rubber material that is green in color, do not use the old ...
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