I don't know but I think you have the answer since all of the above is discarded, it will not be that somewhere in the exhaust tube has a tube union, which carries a spring that presses a nut so that it is always united (

I do not know exactly as they will have already noticed but the idea is that

) it will not be that it lacks squeeze and it has a game when it moves and separates the union of the tube.爆裂?
检查排除所有可能性

,并让我们知道它的状况如何