Recently Purchased a 2014 C63 Amg coupe with 106,000 miles.

The car has a huge lack of power. It sounds aggressive but acceleration is not there, more similar to a regular c300. When I first purchased the vehicle it had an engine light but everything seemed fine. I drove it home and at highway speeds the engine light started to flash and the high rpms felt like the engine was shaking all over the place. I pulled over, let it cool down and had no issues besides the sluggish power driving back.

Anyways codes:
P0300
P228f
P0306
P2187
P0171

​​​​Current solutions i am thinking:
Replace all 4 O2 sensors
​​​​​Replace all spark plugsReplace intake manifold gasketReplace crankcase vent valveReplace purge valveLiqui Moly lifter
Oil changeFilter changeLiqui Moly Cerakote & anti friction treatment Does this list seem reasonable or am I doing to much/little?

 

Flashing means misfire if it has specific cylinder codes move the coil from that cylinder to another abs see if it continues if it does that's your culprit. All the stuff you listed is fine it's all tuneup stuff that should be done at some point anyways

 

Swapped 5 and 6 coil. Still coming up with the same CEL codes.

 

Did you look up what the codes mean? Most are misfire, lean, and fuel pressure codes. There are so many things that could be wrong. At that age, you might need injectors AND fuel pumps. Were the plugs changed on time?

 

​​​​​​ All the plugs look original since they still have a factory zip tie on them. I had to cut the zip tie to unplug and release it.
​​​​

 

Looked at pending faults, have cylinder 1 and 5 misfire as well. Also P0430 for cat system deficiency.

 

And if you switch coils from cylinders not indicating misfires do the same cylinders still miss or do they follow the coils to show misfires from the new cylinders they are now running ?

 

Same cylinders still miss. Swapped coils. Spark plugs look good as well.

 

Might have to do a compression check on those two

 

Alright update....

Switched out all o2 sensors. Ran some Liqui through the engine. I was able to turn off the engine light now.

​​​​​​BUT it came back on after turning the car on after driving. I am now getting only two confirmed codes
Random misfire
AndP228F - fuel pressure regulator 1 learning exceeded.

 

is your engine and computer stock factory original or have you modified anything?

 

Took the car to an import mechanic. He switched out the plugs and diagnosed that it needed a new fuel pump. I put in a new fuel pump last week, engine light gone. Everything was working.

Today while driving the engine light came back on.

Ugghh

 

Which fuel pump did you replace? There are 2 pumps and a sending unit. I can’t remember what is on what side. I think the pumps are on the passenger side and the sender is on the drivers? What code did it throw this time?

 

I replaced the entire unit on both sides.

As far as codes now I'm getting
P2187P0171
​​

 

PCV, intake vacuum leak, or throttle body mounting plate leak.