I hate to even post this, but I have to start somewhere. This is a 100hp engine in my RV12. First, I noticed that my oil was extremely dirty after only 25 hours on it. Total time of the engine is 152 hours, and each oil change has found very clean oil until this one. The oil seems loaded with carbon. Pulling the engine through with a totally cold engine exposed 3 nice compressions, and one soggy one. The next step will be a compression test to locate the weak cylinder, but then it will be exploratory from there. My guess is some broken rings are a bad piston. Does anyone have any experience with the above symptoms? I think that I am going to really need some help, and support with this one.
Thanks in advance.................Tom
Thanks in advance.................Tom