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Old 12-01-2019, 07:55 PM
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Location: Las Vegas, NV
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EGR oil gunk deposits in 603 intake manifold

Wondering if I should be concerned with the oily gunk built up over the years from the EGR in the crossover and intake manifold?

It is in the head, in the intake chamber, too though that would be hard to clean without dropping oily gunk into the cylinder. Not so much that it would impede airflow (I think). But it looks kind of bad. My tendency is to clean clean clean stuff like this, but it ain't easy unless you've got a good parts washer which I don't. Any thoughts?

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DS
2010 CL550 - Heaven help me but it's beautiful
87 300D a labor of love
11 GLK 350 So far, so good
08 E350 4matic, Love it.
99 E320 too rusted, sold
87 260E Donated to Newgate School
www.Newgateschool.org - check it out.
12 Ford Escape, sold, forgotten
87 300D, sold, what a mistake
06 Passat 2.0T, PITA, sold

Las Vegas NV
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Old 12-01-2019, 08:02 PM
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If it isn't built up to the point that it's restricting flow, leave it be. It won't hurt anything. Block off the EGR to keep that crap out of the manifold in the future. If it's built up to the point that it's restricting the intake runners, time for a soak and scrub. It's a mess and takes a lot of time.
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Old 12-01-2019, 08:08 PM
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Quote:
Originally Posted by Diseasel300 View Post
If it isn't built up to the point that it's restricting flow, leave it be. It won't hurt anything. Block off the EGR to keep that crap out of the manifold in the future. If it's built up to the point that it's restricting the intake runners, time for a soak and scrub. It's a mess and takes a lot of time.
EGR is blocked - practically the first thing I did after buying it. Thanks for the advice. It looks like a damned dirty job to clean it all out for not much gain.
__________________
DS
2010 CL550 - Heaven help me but it's beautiful
87 300D a labor of love
11 GLK 350 So far, so good
08 E350 4matic, Love it.
99 E320 too rusted, sold
87 260E Donated to Newgate School
www.Newgateschool.org - check it out.
12 Ford Escape, sold, forgotten
87 300D, sold, what a mistake
06 Passat 2.0T, PITA, sold

Las Vegas NV
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  #4  
Old 12-01-2019, 08:16 PM
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My SDL was so choked with soot that the intake runners were down to ~1.5cm in diameter. It took 2 weeks of soaking, scrubbing, rinsing, and repeating to get all that crap out. Big, Big, BIG mess. The 350SD's manifold wasn't bad at all, despite having working EGR when I got the car.

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