Start on engine one morning – sounded weird it had high firing status on cylinders on both banks and exhaust temp deviations, Operator shut it down. I came in and we tried it again, it started ramping up to around 2.9 MWs and tripped off. Bank A1 – A10 cylinder high firing status coming in, Low Exh gas temp deviations on A1-A10 past 300 degrees. Check the spark plugs looked good. Tried it again after spark plug check, whole side of A bank out I think it may be a CCM failure. Considering inspecting the Gas admission valve filters. Ideas anyone?