4.0L Intake Manifold/Cylinder Head Carbon deposits | Ford Explorer Forums - Serious Explorations

  • Register Today It's free!

4.0L Intake Manifold/Cylinder Head Carbon deposits

miker104

Well-Known Member
Joined
November 25, 2009
Messages
216
Reaction score
3
City, State
N KY
Year, Model & Trim Level
'04 XLT
Doing the dreaded death rattle fix (timing chain guide replacement) and have noticed the intake manifold and cylinder head intakes are covered in a film of what appears to be carbon.

Does this indicate another or a more serious issue?
 



Join the Elite Explorers for $20 each year.
Elite Explorer members see no advertisements, no banner ads, no double underlined links,.
Add an avatar, upload photo attachments, and more!
.





No your fine it's normal the egr system re-Circulates the exhaust gasses back into the intake
 












Agree with Donalds. I cleaned mine off with Seafoam--especially around the valves. Take the time to do your throttle body (not EGR related, obviously) at the same time!
 






Thanks for the suggestion. I did replace the Throttle Body a year ago for codes but since it's off now will be a good time to clean it.
 






Back
Top