Vacuum leak under EGR valve?

1999 HONDA ACCORD
273,003 MILES • 3.1L • 4 CYL • 2WD • AUTOMATIC
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AMBI.SKYE
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I'm trying to clean out the exhaust Port underneath the EGR valve. I was hoping to find some diagrams or information on doing so. Tested a while back and found a vacuum leak coming from underneath the valve itself. Had the valve replaced less than 200 miles ago.
Jan 8, 2023 at 10:19 AM
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STRAILER
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Yep, make sure the gasket is new and that the gasket surfaces are clean, there is a change the EGR itself is leaking here are images below to help, also to clean the EGR passages use carb cleaner, and a coat hanger seems to work pretty good. The EGR valve is designed to lower peak combustion temperatures and reduce oxides of nitrogen emissions (NOx) by recirculating exhaust gas through the intake manifold and into the combustion chambers.
Check out the images (below). Please let us know what happens.

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Jan 9, 2023 at 10:45 AM
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AMBI.SKYE
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Thank you.
Any chance you gave a diagram for a 4 cylinder?
Jan 10, 2023 at 2:59 PM
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STRAILER
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Sure, here you go. Check out the images (below). Please let us know if you need anything else to get the problem fixed.
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Jan 11, 2023 at 11:45 AM
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AMBI.SKYE
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Thank you! Got her taken apart and cleaned up, new gasket and got her back together! The misfire codes are gone now thankfully!
New code has popped up though, P0335. Used 2 different code readers and screens said slightly different things. maybe the same but worded differently? Any information would be greatly appreciated!
Feb 24, 2023 at 10:54 AM
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AMBI.SKYE
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Here are the pictures of the 2 different code reader screens.
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Feb 24, 2023 at 10:58 AM
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STRAILER
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Hello AMBI.SKYE,

Glad you could get it fixed, thanks for letting us know. Please use 2CarPros anytime we are here to help. Please start a new question for this problem we only handle one subject per thread. Post your new question here, you must be logged in.

https://www.2carpros.com/questions/new

Cheers, Ken
Feb 25, 2023 at 12:34 PM