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Cleaning the pipe and the part the EGR attaches to

Tiny
JOSHUASCOTT
  • MEMBER
  • 2000 BUICK CENTURY
  • 3.1L
  • V6
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
I am replacing the EGR Valve on this Buick Century and have taken the old one off. I need to know the best way to clean the pipe that runs to the exhaust manifold. What kind of cleaner? Is the pipe easily removable?
Also the engine part that the valve bolts to. How is the best way to clean it without removal?
Any tips or other cleaning that needs to be done while I am "under the hood"?
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Saturday, May 17th, 2014 AT 12:18 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Trya wire like a coat hanger and twirl it around
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Saturday, May 17th, 2014 AT 12:46 PM
Tiny
JOSHUASCOTT
  • MEMBER
  • 2 POSTS
Should I spray some type of cleaner into the hole to remove the carbon buildup?
Is it safe to squirt something like carb cleaner into the pipe going to the exhaust to clean it?
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Saturday, May 17th, 2014 AT 12:59 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You can if you want if there is a heavy build up though it won't do much. Gm and Ford both sell decarbonizer which you have to put in engine then let sit but most of the time it won't go to egr system.
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Saturday, May 17th, 2014 AT 1:03 PM

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