Hristo R.
New Member
- Joined
- Mar 13, 2019
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- Your Mercedes
- Mercedes S Class CDI 320 (W221 - 221.930)
Hi Guys,
I bought a Mercedes S class 320 CDI (W221 - 642.930) 2007, with full service history mainly from MB and in good condition and for a year had no problem at all with it. Mileage is not too high for the year just about 102 000miles.
All of a sudden now, I have an oil leak which appeared right after I had my car for an MOT test, which having in mind everything was fine with the car before the MOT test is very peculiar that it appeared in the day of the MOT test.
It was for my big surpice when the MOT tester found the car was leaking and I had not observed oil spots before that day and on the way back home the car was already making a small but easily noticable oil thread behind it, which was not the case in the morning before the MOT test.
The only thing the garage had to do on the car that day was to change the front tyre before the test as the one I had was a bit worn, so I asked them to do that.
I would not return my car to the same garage for help with the oil leak, as I just went to them as they were the only free garage to do MOT on one day notice, and reading reviews for them now they do dodgy things there, and I just wanted to use them for MOT, wouldn't trust them for more or to admit they could have accidentally (or deliberately) caused the oil leak, and I still have in mind there is some chance the issue was there but concealed by the plastic cover which protects the engine from dust. However I should have noticed oil traces if that was the case in previous days/weeks which I have not.
My question to my more experienced forum fellows and mercedes specialists here is, what could be the reason for a leak which appears to be coming from above the starter?
I have completely removed the under-engine-cover and have tracked the leak produces an oily spot of about 5-10cm in diameter and usually is observed after the engine is stopped and not during running engine.
To potentially excude the Turbine from the equiasion, recently I had a full service and air filters were changed and turbine was accessible to be externally inspected, it did not have extensive amount of oil on it, so it does not seem to be the turbine, but must be something under it and above the starter.
Also the oil is engine oil for sure (black in colour).
Any ideas would be highly appreciated. I am trying to reserve an appointment at reputable garage or MB next week, so would be good to know, to avoid unnecessary work. The MOT garage asked me if I wanted them to inspect the leak on the day of MOT for which I paid them £40 and after inspection they suggested they wanted to replace turbo air hose and reseal the oil pan, which does not make sence when the leak comes from above the starter and above the oil pan seal, so although I know it is a common issue with this engine, no point of spending £800-£1000 for that to only realise problem is from above.
Any advise would be highly appreciated!
Great thanks fellows! Buying a pint to everyone that helps with the right directions
I bought a Mercedes S class 320 CDI (W221 - 642.930) 2007, with full service history mainly from MB and in good condition and for a year had no problem at all with it. Mileage is not too high for the year just about 102 000miles.
All of a sudden now, I have an oil leak which appeared right after I had my car for an MOT test, which having in mind everything was fine with the car before the MOT test is very peculiar that it appeared in the day of the MOT test.
It was for my big surpice when the MOT tester found the car was leaking and I had not observed oil spots before that day and on the way back home the car was already making a small but easily noticable oil thread behind it, which was not the case in the morning before the MOT test.
The only thing the garage had to do on the car that day was to change the front tyre before the test as the one I had was a bit worn, so I asked them to do that.
I would not return my car to the same garage for help with the oil leak, as I just went to them as they were the only free garage to do MOT on one day notice, and reading reviews for them now they do dodgy things there, and I just wanted to use them for MOT, wouldn't trust them for more or to admit they could have accidentally (or deliberately) caused the oil leak, and I still have in mind there is some chance the issue was there but concealed by the plastic cover which protects the engine from dust. However I should have noticed oil traces if that was the case in previous days/weeks which I have not.
My question to my more experienced forum fellows and mercedes specialists here is, what could be the reason for a leak which appears to be coming from above the starter?
I have completely removed the under-engine-cover and have tracked the leak produces an oily spot of about 5-10cm in diameter and usually is observed after the engine is stopped and not during running engine.
To potentially excude the Turbine from the equiasion, recently I had a full service and air filters were changed and turbine was accessible to be externally inspected, it did not have extensive amount of oil on it, so it does not seem to be the turbine, but must be something under it and above the starter.
Also the oil is engine oil for sure (black in colour).
Any ideas would be highly appreciated. I am trying to reserve an appointment at reputable garage or MB next week, so would be good to know, to avoid unnecessary work. The MOT garage asked me if I wanted them to inspect the leak on the day of MOT for which I paid them £40 and after inspection they suggested they wanted to replace turbo air hose and reseal the oil pan, which does not make sence when the leak comes from above the starter and above the oil pan seal, so although I know it is a common issue with this engine, no point of spending £800-£1000 for that to only realise problem is from above.
Any advise would be highly appreciated!
Great thanks fellows! Buying a pint to everyone that helps with the right directions
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