metallurch
New Member
- Joined
- Aug 14, 2013
- Messages
- 3
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- Age
- 35
- Location
- Preston
- Your Mercedes
- C220 CDI - 2003 - 2.2CDi
Hi everyone,
I have a 2003 model C220 CDi and I'm having serious problems with it. When the engine is started from cold it shudders quite violently for the first few seconds and then stalls. Usually on the 2nd start it shudders and picks up. If you push the accelerator all the way to the floor on the first start it will prevent it from stalling but the revs don't climb, it just shudders violently for about 10 seconds like its barely able to run. The odd thing is that after about 10 seconds it seems to idle ok and revs will climb as you would expect.
When I attempt to set off, in either D or R the car hardly moves. Even with my foot to the floor it will crawl very slowly, I don't get any power from it until it reaches about 1300-1400 RPM, during this stage it will pump out a huge cloud of black smoke. Once it is past that stage and on the boost the car drives perfectly fine, so really the only issue is setting off from a standstill. Once rolling the car behaves normally, no power issues, gear changes are smooth and It'll easily cruise at 90mph on the motorway with no excessive smoke that I can see.
So having a small amount of technical knowledge I've done a bit of work myself, and here's what I know so far:
The EGR valve is not clogged, and there are no issues with the actuator. I've cleaned it and with the intake hose removed I can see the valve moving freely while the engine is running.
The intake manifold contains a bit of gunk as you would expect for a car on 110,000 miles but none of the channels are blocked and the swirl flaps move freely.
In some of the gunk lining the intake ports on the cylinder head I found a couple of small metal shards (about 2-4mm), this was found in 2 of the intake ports. I have no idea where it could have come from as the air filter is in good condition and the compressor on the turbo looks perfectly normal. Not to mention that if the turbo was missing chunks if its compressor wheel it probably wouldn't work too well.
The car shows up no fault codes.
I was thinking about pulling some injectors out to check out the state of the pistons and valves with a fiber optic camera but I'm concerned that if I let air into the common rail fuel system it might not start up when I put it back together. If anyone out there has any advice on what I should do next it would be much appreciated, I've pretty much reached the limit of my knowledge.
Thanks.
I have a 2003 model C220 CDi and I'm having serious problems with it. When the engine is started from cold it shudders quite violently for the first few seconds and then stalls. Usually on the 2nd start it shudders and picks up. If you push the accelerator all the way to the floor on the first start it will prevent it from stalling but the revs don't climb, it just shudders violently for about 10 seconds like its barely able to run. The odd thing is that after about 10 seconds it seems to idle ok and revs will climb as you would expect.
When I attempt to set off, in either D or R the car hardly moves. Even with my foot to the floor it will crawl very slowly, I don't get any power from it until it reaches about 1300-1400 RPM, during this stage it will pump out a huge cloud of black smoke. Once it is past that stage and on the boost the car drives perfectly fine, so really the only issue is setting off from a standstill. Once rolling the car behaves normally, no power issues, gear changes are smooth and It'll easily cruise at 90mph on the motorway with no excessive smoke that I can see.
So having a small amount of technical knowledge I've done a bit of work myself, and here's what I know so far:
The EGR valve is not clogged, and there are no issues with the actuator. I've cleaned it and with the intake hose removed I can see the valve moving freely while the engine is running.
The intake manifold contains a bit of gunk as you would expect for a car on 110,000 miles but none of the channels are blocked and the swirl flaps move freely.
In some of the gunk lining the intake ports on the cylinder head I found a couple of small metal shards (about 2-4mm), this was found in 2 of the intake ports. I have no idea where it could have come from as the air filter is in good condition and the compressor on the turbo looks perfectly normal. Not to mention that if the turbo was missing chunks if its compressor wheel it probably wouldn't work too well.
The car shows up no fault codes.
I was thinking about pulling some injectors out to check out the state of the pistons and valves with a fiber optic camera but I'm concerned that if I let air into the common rail fuel system it might not start up when I put it back together. If anyone out there has any advice on what I should do next it would be much appreciated, I've pretty much reached the limit of my knowledge.
Thanks.