How does the EGR valve get that dirty?? - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 03-30-2008, 04:42 PM Thread Starter
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How does the EGR valve get that dirty??

I pulled the EGR valve on my buddies truck today(42K miles). The thing was beyond clogged. We cleaned it up and reinstalled it. Truck runs great. My question is how does it get that bad? He's had no trouble at all. We pulled it more for maintenance then anything else. Just very surprising!

2005 Ford F-350 Lariat Crew Cab 4X4
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post #2 of 6 Old 03-30-2008, 04:53 PM
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ford knows about this issue, they even recommend replacing it rather than cleaning it. it's just one of those "fantastic" new emission parts on our trucks lol

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post #3 of 6 Old 03-30-2008, 08:33 PM
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Extended idling is one of the quickest ways to cause all the soot formation and plug the EGR. Even short runs and not letting the engine get to full operating temperature will contribute.

I personally believe that fuel additives can help the burn efficiency and help prevent soot formation. Synthetic oils that withstand high temperatures might also be a slight help.

I paid for the most recent flash even though I was not having any problems for two reasons:
1. Inductive heating
2. Updated idle strategy - eliminates EGR operation at extended idle

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post #4 of 6 Old 03-31-2008, 12:15 PM
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I paid to have mine EGR turned off with an SCT X3!!

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post #5 of 6 Old 03-31-2008, 02:05 PM
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Quote:
Originally Posted by Powerstroke W/smoke View Post
ford knows about this issue, they even recommend replacing it rather than cleaning it. it's just one of those "fantastic" new emission parts on our trucks lol
They used to recomend replacement but have since issued proper cleaning procedures
.
TSB # 06-19-6 has been released with guidelines to clean and test the valve for proper operation. If the valve shows signs of excessive coking the root cause of the coking must be identified and corrected. Cleaning of the EGR bore and the intake manifold may also be required.
from: http://www.forddoctorsdts.com/articl...icle-06-12.php
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post #6 of 6 Old 03-31-2008, 06:48 PM
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Idling my truck here in florida the water temperature goes down from 186F to 170/down lower if longer. I usualy never Idle it but it sure get colder as the Idle is extended.

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