EGR Valve: Question about O-Ring - Ford Powerstroke Diesel Forum
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Old 04-14-2011, 05:11 PM
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EGR Valve: Question about O-Ring

Popped my EGR valve out today (05' F-250 6.0 stock) to clean some of the crud off. Local parts stores do not have the Gasket Kits in stock and I was feeling kinda cheap, so I was going to reuse the old O-rings until the new ones came in. Well, when I went to reinstall the valve, I pinched an O ring (bottom one).

Here is my question. Wife is out of town and I am playing single dad for 4 kids for the next week or so and one vehicle. Will I hurt anything by running the vehicle without the o-ring until the new one comes in. Should be here tomorrow, next day at the latest. Only local driving, 30 miles daily max. Thanks for the help.

Last edited by gunnz75; 04-14-2011 at 06:35 PM.
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Old 04-14-2011, 06:40 PM
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The truck might run like poop, exhaust gases will constantly be entering the intake. And if the leak is bad enough, the coolant can enter the intake causing the motor to hydro-lock or stretch the headbolts.
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Old 04-14-2011, 06:56 PM
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The bottom o ring is not usable at all. The EGR valve would only have the top oring. How much coolant flows through? and how would it escape. Not very knowledgeable with the whole EGR system. Thanks for the reply
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Old 04-14-2011, 07:12 PM
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Quote:
Originally Posted by gunnz75 View Post
The bottom o ring is not usable at all. The EGR valve would only have the top oring. How much coolant flows through? and how would it escape. Not very knowledgeable with the whole EGR system. Thanks for the reply
Page #37
http://www.forddoctorsdts.com/articl...eTableBook.pdf

Page #6
http://www.forddoctorsdts.com/articl...eTableBook.pdf
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Old 04-14-2011, 07:52 PM
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Go to ford dealer in the morning and buy a gasket kit for the valve.Tomorrow at work I can log on and give you the exact part number if you like.
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Old 04-15-2011, 05:12 AM
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Ya buy one at Ford you get the 2 o rings and gasket for like $8 I just cleaned mine last week.
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Old 04-15-2011, 10:04 AM
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Thanks for the replies. I will head down to the Ford Dealership and pick one up. It is about 20 miles or so away.
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Old 04-15-2011, 04:07 PM
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EGR O-ring AND gasket kit number is 3C3Z-9P455-AB or International # 1840778C92
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Old 04-15-2011, 04:32 PM
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FYI about diesel EGR systems. A few this have to happen to for the egr system to work. First of all thats why some manufactures use "twins" (compound turbos) or vgt's . They require a more controlled boost pressure and more of it. It has to help create a strong enough draft to help the egr process happen Second the egr valve will open when the coolant temps reach operating temperature. They do not want "ice" cold exhaust gases reentering the combustion chambers. Its bad enough that exhaust is reentering an engine anyway. The egr cooler knocks the temp of the gases to around 170d f. From what i understand in 2009 and newer engines tampering with any emission control devices, or letting your urea tank empty will put the engine in derate, or bypassing the dpf and its differential sensors will cause all sorts of issues. So even though your engine isn't that new, i wouldn't mess around with leaving o-rings or gaskets out and running your engine. Suggestion, if you had crud built up in the egr valve, i would consider inspecting the exhaust turbine wheel, and the vanes in the turbo, if its possible. I really don't like the idea of multiple moving parts in the turbos exhaust stream, more to get goobered up or not work at all. Any one last thing, avoid hot shut downs, and no more idling, if it has to idle more then five minutes, shut it off.
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