W212 m276 rpm wont stay still!
06-27-2024, 09:01 AM
#2
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2014 - W212 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Well, now at 197,000KM if the engine and tranny mounts ( 3 ) have not been replaced at least at 125,000KM.......... the engine mounts + tranny is partially or entirely responsible for the
vibration you are feeling.
Slight RPM "burb" could be from AC compressor kicking in, assuming your combustion is all good .
vibration you are feeling.
Slight RPM "burb" could be from AC compressor kicking in, assuming your combustion is all good .
Yesterday, 02:46 AM
#3
Well, now at 197,000KM if the engine and tranny mounts ( 3 ) have not been replaced at least at 125,000KM.......... the engine mounts + tranny is partially or entirely responsible for the
vibration you are feeling.
Slight RPM "burb" could be from AC compressor kicking in, assuming your combustion is all good .
vibration you are feeling.
Slight RPM "burb" could be from AC compressor kicking in, assuming your combustion is all good .
Yesterday, 04:13 AM
#4
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2014 - W212 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
You need to bring it to a proper MB capable workshop.
They can scan the car and check fuel trims, cylinder smooth running, EVAP system , PCV system, compression test using battery amperage which is known as Relative Compression and others.
The engine to run well need 3 things.
Fuel, air and proper timing to fire the spark plug...aka ignition and also good compression.
They can scan the car and check fuel trims, cylinder smooth running, EVAP system , PCV system, compression test using battery amperage which is known as Relative Compression and others.
The engine to run well need 3 things.
Fuel, air and proper timing to fire the spark plug...aka ignition and also good compression.
Yesterday, 08:50 AM
#5
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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
You need to bring it to a proper MB capable workshop.
They can scan the car and check fuel trims, cylinder smooth running, EVAP system , PCV system, compression test using battery amperage which is known as Relative Compression and others.
The engine to run well need 3 things.
Fuel, air and proper timing to fire the spark plug...aka ignition and also good compression.
They can scan the car and check fuel trims, cylinder smooth running, EVAP system , PCV system, compression test using battery amperage which is known as Relative Compression and others.
The engine to run well need 3 things.
Fuel, air and proper timing to fire the spark plug...aka ignition and also good compression.
On a sidenote, I visually checked my engine mounts on my C350 with 128,000 miles and they appear collapsed, thought there is not yet any noticeable vibration. I will be replacing them some time this summer.
