Did the compression test last night, turns out that there is no compression at all on the 6-th cylinder. Put oil in the cylinder measured again and again no compression. This lead me to think that a valve was not closing, so I took off the valve lifters on the 6-th cyl. (thought that there might be a stuck lifter) and measured again, again no compression . Did a smoke test (I don't smoke but ..), blew cigarette smoke into the 6-th cylinder to see were it'll come out. It came out of the plug hole in cylinder 1 when I put a plug in the 1-st cylinder it came out off cylinder number 4. So I'm thinking that this might indicate a cracked ring land on the 6-th cylinder or bad valve (smoke going through the exhaust header than back to 1-st or 4-th cylinder). Thinking that if it's a cracked ring land it should show at least a bit of compression on the measuring gauge ?


P.S. The head will be coming out in the following days and if the problem is not a valve , then the whole engine will come out to determine the problem and fix it .

P.P.S Also there is a lot of oil in the intake manifold ....

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190E 3.0-24v (M104 980) turbo @ 0.8 bar
1/4 mile: 2.483 / 13.540 / 175.17 km/h (street tires)