Vacuum leak under EGR valve?

Tiny
AMBI.SKYE
  • MEMBER
  • 1999 HONDA ACCORD
  • 3.1L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 273,003 MILES
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.
Sunday, January 8th, 2023 AT 10:19 AM

6 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,149 POSTS
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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Monday, January 9th, 2023 AT 10:45 AM
Tiny
AMBI.SKYE
  • MEMBER
  • 21 POSTS
Thank you.
Any chance you gave a diagram for a 4 cylinder?
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Tuesday, January 10th, 2023 AT 2:59 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,149 POSTS
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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Wednesday, January 11th, 2023 AT 11:45 AM
Tiny
AMBI.SKYE
  • MEMBER
  • 21 POSTS
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!
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Friday, February 24th, 2023 AT 10:54 AM
Tiny
AMBI.SKYE
  • MEMBER
  • 21 POSTS
Here are the pictures of the 2 different code reader screens.
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Friday, February 24th, 2023 AT 10:58 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,149 POSTS
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
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Saturday, February 25th, 2023 AT 12:34 PM

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