AMG=in Germany we say: A dieu M ein G eld, means byebye my money😅

No matter what, Ivan will have the answer, he always does.

Always wait until the oil light comes on to check oil level.

The clues standing out to me are loss of coolant, burnt oil smell, and that whine noise when you were revving. Many turbos have coolant and oil lines to them . As you where standing beside the running engine is was noisy. So I am also wondering about the 2 stage oil pressure switch code that was dismissed. That code can set when the vehicle is a quart or more low on oil. So there maybe mechanical damage to the phasers now. I would also verify oil pressure is operating correctly on the 2 stage system. Lots of items for Ivan to sort through.....I can't wait! Hopefully it will be a 3 or 4 parts series.

Bring out the smoke machine, testing for cracked intercoolers , ducting and intake leaks ?

Check the intake plenum seals. They can shrink and allow air to pass causing a lean condition. But to have this happen on both cylinder banks is very unusual.

owning older german luxury cars is often like building an outhouse on a geyser.eventually your going to be getting a ton of sh•t.whether you want it or not.

I would check to see if the O2 sensors are plugged in right and not crossed. Worth a look. 👀 Waiting on part II. It’s going to be great! 👍

AMG = All Money Gone 😶‍🌫️🥺😂😂😂😂

You never get the easy ones. Mercedes AMG looks like a perfectly crafted nightmare. Can’t wait for part 2

I had an inline 6 GM port injection run rich at about 280k miles. It was the intake manifold gasket leaking.

I'm going to take a guess, because wild ass guesses are fun! That oil consumption is what's going to be throwing the trims off, and that's why it's intermittent/unpredictable, and that's why there's no 2 gallon puddle of oil under it.

There is no such thing as fixing a 10 year old 100k Benz, it will always be broken in some way no matter how much $$$$ you throw at it.

80s Cadillacs would do something similar when the intake would start leaking. The intake rail were under the valve covers so they might go lean, they might suck oil and coolant would end up in the oil. A reasonably consistent way to prove the internal vacuum leak was to remove pcv valve put a vacuum gauge in the hole in the valve cover, block the vent hole on the other one and start the engine. If crankcase went into a vacuum, it was confirmed. Lean codes almost always were involved.

I would check the turbos for oil streaks to the intake. When turbos go bad they'll consume oil rapidly

Ivan, Get ready to RETIRE. Start with, both turbos, valve cover gaskets, pan gasket, P/S pump, Transmission, all cooling system hoses..... oh maybe an engine.

I knew this was gonna be great after the first four words.."fancy, German money pit"

Last video: The most primitive type of fuel system, fixed for free using farmer mentality. This video… super complicated computer controlled fuel system problem on one of the most difficult cars to diagnose in the world. I love this channel.

I've been here many times. Dealing with these Mercs with multiple problems. The repair bills are almost always in the multiple of thousands.

Ivan wants to plug in his OBD scanner in the antique Ford.

I'm 3 mins in... to me: "post catalyst system rich" ---- sounds like it's the O2 sensor that is AFTER the catalytic converter. If it's too rich there, it just means that the converter isn't working. That's my initial guess.. Needs a new cat

Interesting case study. Next step is take Amanda with you on a test drive and it will break down on the side of the road. 🤣🤣

this is why i like my 5 gas analyzer it keeps it honest

I would check for carbon buildup on the inlet valves before doing anything that's fuel injector related,I was also thinking about using a smoke machine to diagnose any air leaks, also,it could be leaking between the turbochargers & the inlet manifold under boost as well !

That Model A could be on the road in another 100 years. The case study Merc will be mechanically totaled within three years, if not by the end of this series 😂

Ivan, maybe a call out to Diagnose Dan across the Pond for some ideas on diagnosing problem, he deals with all these exotic and expensive foreign cars.

First thing I would do is see how clean the air filters were, but would do so with almost no hope of it resolving the issue. The second thing I would do is confirm the customer was correct about 2 gallons low vs 2 quarts low of oil. If it was run with 2 gallons low of oil, I would sell it as a running parts car.

10,000 mile oil change intervals, especially for GDI is certainly a problem.

Looks like Model A in front of you.Best computors in those!!! CHEERS from HERE!

Beautiful car, the S550 is the top of the line and the standard everybody else tries to emulate. I would think this would be a perfect car for someone like you that wouldn't have to rely on the stealership to keep it going. You can pick them up cheap and you really get a lot of car for the money. Yes they are wonderfully complicated but that just adds to the allure for the mechanically inclined. Be tough to get back into the Suzuki after driving a car like this. Keep up the good work!

Cars like these need M539Restoration levels of lovin' to keep them in shape.

CoPilot: Certainly! Below are the hypothetical manufacturer’s pinpoint tests for P2097 (Post Catalyst Fuel Trim System Too Rich Bank 1): Check for Trouble Codes: Inspect Oxygen Sensor Wiring: Fuel Pressure Test: Check for Exhaust Leaks: Monitor Oxygen Sensor Voltage: Inspect Catalytic Converter: Verify Fuel Injector Operation: Check Engine Coolant Temperature Sensor: Smoke Test for Vacuum Leaks: Reprogramming or PCM Replacement:

A high end German car that’s a money pit?! Now I’ve heard everything!

Thanks for the video Ivan.

Seafoam. That fixes everything! I read that on them interwebs. Thinking he added 2 quarts of oil not gallons but I've been wrong before.

Haven't had time to watch the video yet, but check out all the bores of any bi turbo Mercedes V8 before you invest anything into it. They have problems with the cylinder surface which can't be honed (only bored out and replaced by a liner), they usually scratch the walls and burn oil like crazy.

Fantastic tutorial ! Excellent teaching techniques !! Thanks so much Ivan ! I have to give you special commendation for the detail / precision in your coaching cues - the way you verbally state your actions and thought process - as I can track along with you and learn while periodically listening only AND because I am learning how to use the very same scan tool . As you announce every press of the buttons (options) on the screen it becomes clear to me how I am to get the most out of the Thinktool ProS . The unit did not come with instructions but no problemo when you are able to make it so easy to use !! 👊🏼 🔥 📈 🎯 .

MB Dealer told Mom it would be $10,000 to fix the issue triggering the "light" on her dash. (Not check engine light.) I did not know about it. She decided to give the car to a relative.

Just for grins, check out GDI fuel pressure if you can. Also verify the brand name on the O2 sensors. They should be Bosch. Other than that, you may have intake plenum leaks.

60mph Humbug... 👍 to see Ivan read the speed ometer at 160...😂😂 Great work ethic as always on a PHAD video!

Just picked up the Autel 2024MX808S just to work on my daughters Mercedes 04 C240 Benn Dover rates for parts for these things even at that age

Lots of good advice. Agreed, on vacuum leak at plenum, stock o2 ?, I'm in no position to advise Ivan the Great, the slight loss of coolant may be a clue. Being down 2 quarts of oil ( had to be qts.) On such a large capacity isn't much. My son had a c63 normally aspirated AMG. A beast and fun but I convinced him it was time to move on before the pit developed. Good luck and thanks for years of great content.

Thank you PHAD

Coolant leak could maybe where the wiper motor is located. There are some coolant lines for the interiorheating. I had also on a Merc S 63amg with cracked coolant pipes

Oil capacity is about 8 or 9 liters which is...very slightly more in quarts.

2:00 hopefully he meant to say quarts?! 2 gallons is nearly the whole oil capacity of the engine 🤯

Loved this one....part II ?!? plz!

Good afternoon Ivan, I recently diagnoses a 2012 C280 with those same DTC's, turned out that someone had lost the clip that retains the intake air filter assembly to the MAF sensor housing introducing debris into the system. After cleaning the MAF sensor, replacing the retaining clip and resetting adaptations, the fuel trims returned to normal. May not apply in this particular case study, but worth taking a look at the MAF's live data. Thank for the awesome head scratchers🦾

This is going to be a good one! I'm guessing its not breathing right, PCV, dirty valves or turbos... can't wait for the next installment ✌

Right off the bat it sounds like the o2 sensors are switched

Hi IVAN

That twin-turbo V8 engine holds nine quarts of oil, and he had to add eight. Could that alone could cause permanent engine damage? I would think so, especially in the turbos.

Ivan I have zero clue as ro what my next step would be but I know your the right guy for the job😄 maybe some kind hearted merc tech that’s come across such a problem might give u the heads up?

checking the uk forums for p2097 they all talk about extension wires to the post cat o2,s being the problem hope this might give you some help.

I would check the high pressure fuel pump for low fuel pressure

Finally another mercedes. Pumped

Eric can tear this engine down in less than a half hour Eric does do cars😂

Quite bizarre Ivan. Very puzzling how short and long term fuel trims mismatch. Seems like connectors are crossed. Also looks like an intake air leak to cause the lean condition. I'm sure you will figure it out in one of the upcoming videos.

Tough one, Ivan! If it's reasonably repairable (OEM parts are very expensive), I'm guessing a several part series is coming. I'm expecting multiple problems behind the symptoms, and you can't be sure what customer has done (maybe even oxygen sensors crossed, if at all possible). Let Part 2 be posted 🙂

Yep, you were going in the direction I was thinking....poor air delivery....it could be intake port obstruction, or possibly even turbo inefficiency...but then there's no low boost code so that might cancel that out.....what does that engine use to read air entering the motor? Maybe a relearn adaptation and for all those systems may be in order..... On a side note.....when is Ivan going to explain his smashed thumb finger???? I know he thinks nobody notices....but we all do...or did I miss an explanation in another comment from a past video already?!?! 😂😂

Vanity is a great way to separate the general public from their money 💴

The old T-Model or what ever it was-NEVER AN ENGINE LIGHT : )

Great car, adding fuel to the engine and mold. To the seat belt..😅

Missing coolant and oil? Gasket at the oil cooler dried out and allowing coolant and oil to.mix?

Hang in there

First thought the O2 sensors looks a bit lazy, perhaps not OEM. Think that you should check the injectors, slightly stuck open. Or leaky flexpipes to the exhaustpipes

Smoke test for vacuum leaks for lean condition, test turbo shaft for oil and coolant consumption, try pressuring the cooling system

Hope you & yours are safe, considering the weather in your area.

I'd look into possibly the intake for some type of air restriction

Post Cat seems to suggest it's after the cat, on the rear lambda senser? sounds to me like someone who fitted the sensors might have got the plugs mixed up, plugged sensors into the wrong sockets..F.

Finally a tough one!!!

Easy, next step, send it off to Wilberts U-Pull. :)

It's a tough call. But with A/F control issues, I usually start looking for leaks in the intake track. And being that this car has twin turbos means you have a lot more pluming to check.

I would chase the oil leaks and do an intense visual inspection at the same time while pondering the the other problems have to fix the oil leak anyway after market junk probably

Check fuel pressure spark plugs, injectors hope the owner used Bosch or oem O2 sensors

if you reset service E then it will probaly show service B overdue then A and there usually 300 days over, not had any v8 but dont they normally have airflow meters right next to the turbo

Everyone loves grandpa Scotty.

Being a GDI I would use a fuel system cleaner to try to clean the valves, but first use a borescope to inspect inside. Also the Turbos sound odd and may have been running hotter than usual with the low oil issue, they're probably due for replacement.

Almost makes me think something isn't plugged in correctly. But not sure even how that could be.

I would smoke test the intake system and check to see if the O2 sensors are plugged into the correct channels.

BTW: Regarding lack of ring seal, a very historic case: The first SBCs had REALLY bad ring seal right outa the gate - dealers were advised to feed those engines Bon-Ami (into the carb mouth, apparently)... which had enough grit to 'hone' the cylinders/rings/pistons into sealing.... So the story goes, anyway.

I would really like to see what the fuel pressure is running at. I would also check the air filter and check the air flow.

Ivan, I have the a similar problem on my Audi A5 2.0T (2015). No codes at all, but long term trims are 16-20 percent lean for no reason. Smoke tested, replaced with oem MAF, PCV valve, injector cleaner fluid, o2 sensors reading fine, no exhaust leaks, fuel pressure good.. nothing. Looking forward to seeing what fixes this BENZ.

Oh Boy

Some cars deserve to go out in a blaze of glory. I've always wanted to light off a thermite canister over an engine block. Could this be my opportunity? 😁

ECM/PCM adding fuel, post cat O2 sensors say rich. I would check wiring for all O2 sensors and then unplug the upstream AFR sensors, reset and see what happens?

May not be the pressure of fuel pump that rise a little bit and make the post fuel trim go up , or carbun build up in exhaust valve and make the post injection go riche

I would start by doing the easiest things first. #1 check fuel pressure both banks #2 Smoke test for leaks (especialy around the turbos)

You can do a catalyst efficiency test may that cause that also

I think something is not correct on that rear o2 sensor. Maybe unplug it to confirm position. The oil consumption isn't a problem at 2 qrts but at 2 gallons i would be looking for fouled plugs( you may be wasting your time). Also a smoke test for vacuum leaks when the engine is stone cold as intake leaks can disappear after slight warm up. Good luck Ivan😊

I was wondering if it has another injector in the inlet tract somewhere, some direction injection engines do. I think I would check fuel pressure it does look it is trying to compensate for a lean condition. Also wondering if there is an issue with boost control, if the boost is higher than it should be it will be trying to inject more fuel.... so many things to go wrong on modern engines with EGR...

Were the O2 sensors OEM?

Btw...it kinda seems like whoever replaced the o2 sensors might have mixed up the pre and post KAT sensor connectors....

I'd check the turbos for shaft play and do a hydrocarbon test.

Sounds like the sensor wires are crossed. Not sure if that can be done on this car but it used to happen on bmw v12s a lot after someone had changed the sensors and not marked the loom for each one.

So many oil change places and shops unfamiliar with euro vehicles don't know how to correctly reset service. Or they reset the wrong service interval. I recently had a s65 AMG that just said service exceeded by xxxxxx😂

Definitely smoke test and look for intake system leaks.

Check for vacuum leaks with the smoke generator.

I would be curious about the high pressure fuel pump. Is it possibly not delivering enough pressure. Although, I would expect it to set a code...

Check for intake/exhaust leaks, and or bad injectors. Ecm is adding fuel , you've concluded it is indeed running lean . Does it have an exhaust leak introducing air ? Have experienced this personally.