Intake Manifold: Interesting holes... - Mercedes-Benz Forum
 
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post #1 of 4 (permalink) Old 08-11-2019, 04:46 PM Thread Starter
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Intake Manifold: Interesting holes...

While changing out my injectors I noticed a number of teardrop looking holes (see pic) in the upper intake manifold. These do not look like anything factory so wondering what could be causing this. The car only has 50K miles and before I received it from my father it sat for months at a time, but always in a garage. Been replacing many of the seals, gaskets and corroded rubber parts. That being said, I did find a few acorn looking things near these holes. Anyone come across these types of holes? Defective manifold?

Thanks as always appreciate feedback as this forum is a wealth of knowledge.
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post #2 of 4 (permalink) Old 08-11-2019, 05:55 PM
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Normal part of the casting process.
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post #3 of 4 (permalink) Old 08-11-2019, 06:37 PM
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Yup mine has those too. Great little drain holes.
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post #4 of 4 (permalink) Old 08-12-2019, 04:41 AM Thread Starter
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Appreciate the reply. Thanks.
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