The most likely cause is that the rings have lost their temper and are not retaining the compression and letting it pass to the carter what you mention has nothing to do with that problem I recommend measuring the compression of the cylinders and the media that give you compare them with those of the manufacturer if it does not mark you almost or if it is less than what the manufacturer says pitifully you must disarm the engine and change the engine Put good quality rings preferably genuine or if the pocket does not reach good高质量的日本戒指和prblema结束了