Join Date: Jun 2008
Location: Brampton, Ontario, Canada
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If the intake passages are carboned up severely, all it takes is for a loose piece of residual carbon to get lodged into the valve, and you'll have the same problem again. I have had my fair share of bad-out-of-box EGR valves in my experience. There is a specific build date for suspect bad EGR valves that Ford released an internal special service message warning dealers about. I don't remember the build date off the top of my head. Inspect the new EGR valve for a pink dot on one side, and a smaller silver dot on the other, to verify that the EGR valve installed on your truck is not within the suspect bad build date.
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Ford Diesel/Senior/Master Tech who placed 2nd overall in Ontario on the Fix-It-Right-First-Visit score for 2010
....who works at a dealership that now employs SOME half decent looking female employees since they overhauled most of the administrative staff
....but STILL loves hot women with big boobies
....and STILL hates working on E-Series with 6.0L