Hey Im trying to get some help on cleaning My EGR valve I have 80,000 miles on my mazdaspeed 3 and I just got the engine code p0401 Flow interrupted so From doing research I found out you can pay like 50$ for the new part but still other parts will still have carbon build up in it so I want to try and clean it I found a section on the protege section showing how to do it with pictures and Its a little different then our car so does anyone have some info for me on how to clean it thanks for the help... and I didnt want to go the seafoam route because I heard its harmful and it burns the sparkplugs out