Black Pasta on the piston

Well I have a mazda and it has been thrown away for two months ... and I recently started to see what failed ... and because advo

That can be the product of multiple reasons one of them that you have an excess of fuel when it burns a carbon or hollin but to determine if it is the acetie of the engine that produces it you must observe the level of the oil between change and change if this is your case there are two reasons there are two reasons one the stamps of the valves and finally the rings