I have a 5241, 10kw purchased back in May 2007. It has 348 hours on it. Regular maintenance every year and synthetic 5w30 oil. Also I have checked and adjusted the valves twice since new. I am located in the U.P. of Michigan. Trout Lake, MI. It runs on propane.
Last winter we had an ice storm December 31, 2019 and were on generator power for 4 days. (we are in FL for the winters) The only thing running at the home is a high efficiency gas furnace, security cameras and internet. When returned in the spring, it was down 1.5 quarts of oil and it only holds 1.7 quarts. I added oil and then changed the oil and filter a few weeks later along with the spark plugs and air cleaner. The oil was a little dark color (like maple syrup), but not black that you find in car oil. The spark plug nearest the front panel was corroded and the back one was normal. Last week I did a load test on it while three of us took showers using the well pump and electric hot water heater. After about 10 minutes of running there was blue smoke coming from the exhaust. I checked the oil and it was down just a little from the full mark.
I suspect it is something with the front cylinder burning the oil. My question is what could be the problem? Rings, bad piston, valve seals or something else?
I did pull both valve covers off, as a general inspections and found some metallic color pieces in the front valve cover, but they were not metal. They were soft and about the size of #5 or #7 pencil lead.
The generator is model #5241, Serial #4798689. The engine is model #OG4446 (GT-530), serial #8109098
I called our nearest servicing dealer in Sault Saint Marie, MI to have them check it out, I gave them all the above information and never received a call back.
I am looking for suggestions as what the problem may be. I am willing to do the repair myself. I also would like to get my hands on a service or repair manual for the GT-530 engine.