M-Class (W166) Produced 2012-2015

ML 350 Spark plug and Cylinder Head

Old Aug 25, 2021 | 04:37 PM
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ML 350
ML 350 Spark plug and Cylinder Head

Hi, My question is for 2013 Mercedes ML 350 4MATIC Gasoline.

a) How many spark plugs does it have in the engine? I want to replace them so am looking for this basic information.

b) Front Cylinder Head covers are leaking engine oil a bit. Dealership recommends resealing the front covers and camshaft solenoids. They do not see any crack in the cylinder head. They would off course replace the gasket. Would this solve the problem? Or it can reoccur and probably require replacement of cylinder head and / or solenoids?

Thank you,
Raj

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Old Aug 25, 2021 | 11:46 PM
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2017 GLE350 4MATIC
6 spark plugs

oil leaks at the front of the cylinder heads is a common leak on this engine. Have the dealer reseal the cam solenoids and chain gallery covers (plates).
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Old Aug 26, 2021 | 12:02 AM
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This place is a joke.
Spark plugs are not a particularly fun job on this engine.
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Old Aug 26, 2021 | 01:17 PM
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Thank you!
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Old Aug 26, 2021 | 01:20 PM
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Thank you, Appreciate the advice!
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Old Aug 26, 2021 | 01:21 PM
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Thank you for the response!
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Old Aug 28, 2021 | 10:27 AM
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2016 GLE350 4MATIC
At what age/mileage do the front of the head covers typically start leaking?
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Old Aug 29, 2021 | 12:10 AM
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Originally Posted by gearFX
At what age/mileage do the front of the head covers typically start leaking?
Less than 50k miles, as early as 30k miles. Mine were leaking around 35k-40k miles. I had to badger my dealer three times to reseal them under warranty. Blithering idiots.
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