M177 Long term maintenance
Thread Starter
Junior Member
Joined: Aug 2019
Posts: 54
Likes: 7
C63s
M177 Long term maintenance
How much info is out there on long term maintenance of the M177?
I've tried doing some research but I haven't been able to find anything about higher mileage M177's and what kind of care they need. For example, when should plugs be changed? When do the intake valves need to be cleaned (how painful is that process??).
Anyone ever able to find good information at all?
I've tried doing some research but I haven't been able to find anything about higher mileage M177's and what kind of care they need. For example, when should plugs be changed? When do the intake valves need to be cleaned (how painful is that process??).
Anyone ever able to find good information at all?
Super Member
Joined: Jun 2015
Posts: 643
Likes: 92
From: Houston, TX
'15 C63S
How much info is out there on long term maintenance of the M177?
I've tried doing some research but I haven't been able to find anything about higher mileage M177's and what kind of care they need. For example, when should plugs be changed? When do the intake valves need to be cleaned (how painful is that process??).
Anyone ever able to find good information at all?
I've tried doing some research but I haven't been able to find anything about higher mileage M177's and what kind of care they need. For example, when should plugs be changed? When do the intake valves need to be cleaned (how painful is that process??).
Anyone ever able to find good information at all?
Spark plugs are due at 50K miles. Supposedly they are an absolute PITA to do, at least according to the tech that did mine.
Not sure about the intake as I don't think anyone has enough mileage yet and/or has seen any significant buildup issues like other DI engines seem to have.
