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Old 04-28-2007, 03:01 PM
red560SL red560SL is offline
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Join Date: Sep 2006
Location: Chandler, AZ
Posts: 47
Well I pulled each and every spark plug and there is no sign of oil on any of them. In fact their burn looks excellent. So I thought possibly it has been too long since this happened and the oil was gone so I started her up again. First click and she started as usual. I ran her for a few minutes without any sign of smoke. The engine is super quiet (quieter than my new Toyota) and sounds strong. Then suddenly the smoke appeared again and I found oil leaking out of the exhaust where the exhaust collector is. I shut her down and pulled every plug again and found no signs of oil what-so-ever!

So I'm a little confused at this point since oil is no where to be found other than the exhaust. I don't believe it could be a piston ring as that too would show up oil on the spark plug. And wouldn't a dropped valve guide hit the piston or at least make some kind of noise and put some oil in the spark plug area? The oil is getting into the exhaust in some other way. The smoke I see is probably just the oil getting heated up in the exhaust and then burning rather than being burnt from spark plug fire. After all, it takes several minutes before there is any sign of smoke.

So what can cause oil to make it to the exhaust but not into the heads? Could this be an exhaust valve guide or just a simple valve seal or something else? I'm not too familiar with the diagnoses process. My manual totally sucks so it's no help either and is usually best kept on the shelf anyway.

Last year I had an issue I was not able to solve. I took it to a place that is suppose to be "the place" for 107's and they even say they specialize in SL's, but they couldn't figure it out. I then took it to Mercedes who also charged me an arm and a leg and they didn't solve the issue either. However after weeks of having this problem pick at my brain, I solved the issue myself and found the problem was nothing but a faulty sensor. So as you can see, I don't trust the so called "experts" around here. They're only interested in getting a paycheck and don't seem to take pride in what they do.

Any ideas on what I should do next?
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