sidewayzgt

I recently replaced the intake manifold and cleaned the injectors on my 05 C55. Started the car yesterday, drove it about 3 miles and it ran perfect with no codes or check engine light. Started the car this morning and it was strong and still no engine light. Drove it about 30 miles and sure enough the Check Engine Light came on and it had to be towed home!


Before I start the diagnosis and spend a week doing it (lol), does anybody have any idea of what it could be? All that I did was change the intake? Could it be electrical?


Symptoms:
Car all of the sudden wanted to surge, stall and vibrate at low RPM.
Medium amount of white smoke out the tail pipes.
Smell of gas from motor
Will start but it takes 3 times of constant cranking with same symptoms
Sounds like exhaust leak in the rear of the motor near the throttle body


Codes from OBD 2:
misfire in cylinder 1,3 and 4
Open circuit for 02


Any advice would be appreciated. Thanks

C230 Mulac

Interesting...

Smell of gas...what did you do to clean the injectors?

Misfire codes...double check your spark plug wires are all plugged back in and seated properly, you may have disturbed some during the work you did.

Open circuit 02, try searching that code in the forum but generally open circuit means you've got an electrical short somewhere. It could be in the form of a broken wire or just something unplugged. I doubt that you broke a wire so I would check that everything is plugged in around the area that you were working. Could be related to the spark plugs, I don't know. Code is too general to pinpoint location unless someone on the forum has some insight.

Erik C32

Maybe somethibg is wrong / loose with the EGR?

www.benzworld.org/forums/attachments/w208-clk-class/490026d1358384317-diy-egr-cleaning-vacuum-line-replacement-egrdiy6.jpg

Supgee

Since it only started after playing with the manifold you can assume it was caused by that when you removed it. Maybe you have a vacuum leak, a line disconnected somewhere... or by chance maybe the manifold is not seating properly on the gasket causing an air leak. spray a bit of brake clean around the manifold and see if the rpms go up

sidewayzgt

I just went out to check the wiring and 02 sensors and everything seems to be ok. I tried to start the car and immediately heard a loud clunk, the cranking stopped. The second time I tried to start it the cranking was very slow, then regular and then heard the clunk again (it stopped). The third time it cranked regularly and started up. Immediately, the car ran rough with white smoke out the pipes so I turned it off. It also smelled like gas again.


I think the clunk might be the starter going bad from trying to start it so many times yesterday? Why would it crank slow like the battery was going dead then regular?


When I cleaned the injectors I changed the filters as well. Maybe something is clogging them? How would I tell?


This is getting frustrating .


Thanks

sidewayzgt

Supgee, it looks like we posted around the same time lol. Anyway, my question is, why would it run perfect for 2 days then start up like this? I was not being hard on it either.

JonMBZ

Time to take it to a professional before you blow your engine :\

Erik C32

Did you check your EGR?

Its located near the throttle body so if its leaking you would get exhaust noise in that area. Furthermore the engine would run poor because you get a vacuum leak in your intake system.
Last of all it is connected to the intake so you probably have been working on it before while replacing the manifold. To me the EGR seems the most obvious cause.

sidewayzgt

I will check the EGR more thoroughly tomorrow. When I had the intake off, I changed all of the rubber hoses on the EGR including the one that hooks to the intake. I looked at it today and everything seemed to be ok. Yes, that would explain the vacuum sound from the back of the intake but where could it be leaking from if all of the hoses are hooked up? I do have another EGR assembly from a donor intake that I could try. I will cross my fingers. Thanks a lot and I will update tomorrow!

sidewayzgt

Ok, I just checked everything including the EGR and it is still doing the same thing. I have a feeling it is a bad 02 sensor because I am still getting code defs, (misfire in cylinders 3 and 4 and no signal from 02 sensor in bank 1). Any suggestions?


I have another annoying problem that just started! When I try to start the car, the starter will crank and then grind to a stop. When I try and start it a second time it seems like the starter is stuck and the lights will dim like it has a dead battery. If I let it sit for a minute and then try again, the problem will repeat itself. I now cannot get it to turn over long enough for the car to start.


To eliminate the possibility of a low battery, I hooked jumper cables to my other car and tried at again. No change . Could this be a loose starter or the starter gear stripped near the tranny?


All of these problems started when I messed with the intake! This is so frustrating. This car has been nothing but trouble from the start. I hope to get it back on the road soon because I miss driving it.

sidewayzgt

Did some searching and found this video of what my car is doing.


https://mbworld.org/forums/w210-amg/...g-problem.html


Click where it says Starting Problem


The only difference is that mine will get stuck and not crank at all or will start to crank then grind.

EDgineered

What are you pulling the codes with?
Have you checked for "pending codes?"


You said you cleaned the injectors?
In what way/how?
Did you replace the O rings?


You said you replaced the intake manifold?
The whole unit with a new/used one?
Why?
What was wrong with the old one?


Did you remove the coil packs during any of the RnR?


Have you tried to pull out any spark plugs to check to see if they are wet on the cylinders in question?


Where are you located? Zip code?


Please take some pictures of the top of your motor/fuel rail/wires/etc and some of us here can see if anything stands out compared to our cars.


If it was me I would pull the thing back off and start again......

.

sidewayzgt

Thanks for trying to help me, I really appreciate it.


To start off I pulled the codes with my OBDII handheld. As far as the codes and pending codes, I was stupid and cleared them thinking it would start up again. I remember them as (misfire in Cyl 3 and 4, generic misfire and no activity from 02 sensor bank 1).


As far as the injectors are concerned, I pulled them out and changed the O-rings as well as the filters. (I am not sure I was supposed to change the filters because they were a pain to take out. I also had to shave down the sides to get them in because they were generic.) This could be part of the problem?


I replaced the manifold with a used one because the lower vacuum hose had snapped and was not repairable.


I did remove the coil packs and cleaned them up when I replaced the valve cover gaskets. I marked them and put them back in the same order that I took them off. The plugs and wires were changed less then 10K ago.


I did not check the spark plugs yet but that is what I will do next. I cannot get the car started so I might not be able to accurately read them.


My zip is 90277 in So. Cal


The car drove fine for the first 2 days and all of the sudden this happened? I hope that description helped. I really do not have the money to bring it in to a shop and am pretty mechanically inclined. It is also not my first form of transportation.


Thanks again for your patience with this.

Saaboteur

I've been following your thread (and troubles, unfortunately) but haven't been able to think of much. There is lots of wiring in and around the injectors and manifold, indeed the main engine wiring harness is there. The intermittent issues and the fact that the car ran fine for a little while might point to something there. Just a thought though, diagnosing over the forums is a poor replacement for looking at the car in person. Anyway, perhaps you dislodged a ground wire or something in the area? Hopefully there are no pinched wires or anything?

I know you said you looked closely already, but it wouldn't hurt to look again, with a flashlight in hand, going over every inch again.

Lenin

I would say that injector filters is what the problem is. Never heard of anyone changing the MB/Bosch injector filters. Doesn't mean it's not done but I wouldn't do it. You can get a set of used injector from people that replaced thier OEMs with 550cc injectors. If you are interested, I may have a set that I will let go for $50.

Lenin

Never mind. What I have is the wrong part # for you.

sidewayzgt

Thanks for the replies. I am leaning toward the injectors to but I am still stumped as to why it was running like a top for 2 days and then fell flat on its face? I know that it could cause the misfire but could it cause the 02 sensor code? Like I said before, I was just doing casual freeway driving.


Now where do you think I should start with the starter issue? That started at the same time. I cant even start the car now to get anymore codes.


Should I give up and hire a mechanic? lol

sidewayzgt

I guess I do need another set of injectors. Does anybody know of a good deal on a set for sale that will work for my car? I will be open to stock or slightly larger. Or, if anybody can recommend a place in Southern California that would be good as well.

EDgineered

Yes, too much fuel can wash out an O2 sensor and make it go bad, I just saw a YouTube video the other day on Real Street about it.

I searched Mercedes M113 injectors and found rebuilt one's on ebay from a company in CA for $10 each.



Also found what appears to be the correct O rings
http://www.everythingbenz.com/z/part...njector-o-ring

sidewayzgt

I found the $10 injectors and want to buy them but I need to know for sure that they will work? I know nothing about injectors. Here is there Ebay link

http://www.ebay.com/itm/One-Rebuild-Mercedes-M113-BOSCH-EV6-Fuel-Injector-0280155742-A1120780049-/311155058498?pt=Motors_Car_Truck_Parts_Accessories&hash=item4872496742&vxp=mtr .


Will these work for the C55 (CC, lbs)? It says M113?

cm60k

This info. incorrect..!!??!!

these Black injectors for N/A M112 (166cc) #: "112 078 00 49",

you have to get a Beige/Yellow set for M113 (283cc) # :"113 078 03 49" or "113 078 00 23"



ZAYED,,

sidewayzgt

That's what I figured, I sent him an e mail.

sidewayzgt

Well, I pulled the injectors again and look what I found. I have no idea how this happened? All of the o'rings are new and it looks like in pic 1 it had a broken end. The second pic is the injector right in front of it that was leaking fuel as soon as I pulled the rail off. Why did this happen? These were the two injectors on the passenger side closest to the firewall and the one in front of it.


Prognosis:


Two bad injectors that delivered to much fuel (explains fuel smell) that wiped out 02 in bank 1. This in turn made the car act the way it did (I think).


I am going to buy a new set of injectors and hope this does not happen again .

c32kompressor

The black rubber hoses coming from the valve covers and throttle body are for PCV not EGR. If your pcm sees no response from the o2 sensor. It will run in open loop which is a rich mixture . What I think is you have an injector or two that are hung open. When you drove the car for two days and it drove fine nothing was wrong. crud could have got into the pintle inside the injector hanging it open. I would agree as stated above that the 02 was wiped out. A way to test it. Turn the car on (if you can) go to the cylinders that are misfiring. And put a screw driver on the injector. Listen for ticking. This indicates the injector is opening and closing. If it is not ticking, it is either stuck open or inoperable

sidewayzgt

I will keep it in this one because it was already discussed. Ok, the battery was fully charged and it fired up! Now I have bigger problems!
Finally got a new set of injectors on before I started it up. When it first started it was fine then immediately following white smoke poured out both tailpipes and was not stopping. It did pull up codes and they are as followed. P0300 Generic Random Misfire, P0304 Cylinder 4 Misfire, P0302 Cylinder 2 Misfire, P0307 Cylinder 7 Misfire, P0308 Cylinder 8 Misfire. Now Pending Codes: P0202 Open Injector Circuit Cylinder 2, P0304 again, P0302 again, P0300 again, P0307 again, P0308 Again.
I know you can't diagnose without seeing the car but I am worried about the white smoke. I checked the coolant level and it is perfect?

No codes for 02 or Cats? The car was only running for about 1 minute