Multiple cracks on top of engine
Thread Starter
Member
Joined: May 2007
Posts: 172
Likes: 0
From: Montclair, NJ
12 E550
Multiple cracks on top of engine
OK so I just changed my air filters. Approaching the 40K mark so I figured it is time. What was really crazy is what the passenger side top part of the engine looked like. Right next to oil fill hole and behind towards the spark plugs I noticed multiple cracks to the metal. What is up with that? See pictures. I am guessing I should demand that the dealer replaces to entire top of the engine right, while still under warranty? What is that part called exactly? Cylinder head cover? The cracks seemed to be spreading towards the back as well where the spark plugs are...
Member
Joined: Aug 2007
Posts: 236
Likes: 0
From: Dallas, Texas
R350 4-matic
OK so I just changed my air filters. Approaching the 40K mark so I figured it is time. What was really crazy is what the passenger side top part of the engine looked like. Right next to oil fill hole and behind towards the spark plugs I noticed multiple cracks to the metal. What is up with that? See pictures. I am guessing I should demand that the dealer replaces to entire top of the engine right, while still under warranty? What is that part called exactly? Cylinder head cover? The cracks seemed to be spreading towards the back as well where the spark plugs are...
Member
Joined: May 2008
Posts: 205
Likes: 1
From: Chicago, IL
2005 C32 4Matic - That's Not A Typo! :D
Those are casting deformations. Nothing to be alarmed about. If it helps you sleep better at night, show your local mechanic but he'll probably tell you the same thing and that you'll find those on just about any cast parts made.
Member
Joined: Nov 2009
Posts: 228
Likes: 7
From: California
06 R360, 06 F350 6.0, 04 CayenneS, 96 911TT 500HP, 86 928S, 74 911S, 73 914-4, 70 914-6, 02 Durrango
If you see oil then it that is a bad situation.
For the most part that is a normal situation because the metal cools at different rates when they finish casting the unit. That's why the surface looks like that, similar to how mud dries.
For the most part that is a normal situation because the metal cools at different rates when they finish casting the unit. That's why the surface looks like that, similar to how mud dries.
Trending Topics
Newbie
Joined: Feb 2011
Posts: 14
Likes: 0
From: Waxahachie, Texas
2009 r class bluetec, 90 Acura Integra B16, 91 Mit. Galant VR4, 03 ES300, 89 Maxima, 98 Beetle TDI
Just a note. I see those casting deformations alot more on my German cars over the years, less on Japan built cars. Not that the deformations are not there, it just looks like they are machined off after the casting process on cars made in Japan. Just something I've noticed over the years.
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
