Salut Henry, tu dis que tu as quelques KMT ... comment combien?; If they are very few, it gives to think if it is not a factory defect (which is surprised that Isuzu fails this ..) very tight tolerance of the bulon, problem in the material or temperate or machined of this piece, problem in the connecting rod or in its bearing/ enclasquillado, I mean that it is rare that it has happened to you in all the pistons and it will be bad to think that the connecting rod It was a lack of grease, the vilebrequin, canne de connexion, turbocompresseur, axe de culbuteur, etc ... serait allé ... alors que ce moteur n'a pas été ouvert ou réparé ci-dessus et ils se sont mal montés ... J'espère que je m'avère expliqué. salutations!!