Good morning, colleagues help me with my next problem, because my Civic Dx 96 started with a small noise, according to me they can be a valve problem so take it to the mechanic and told me that we should adjust (calibrate) so the hill, in a row he put a laminate with number 6 and in another number 5. I suppose they are sheets that measure the opening. But it turns out that yesterday that the vehicle went for a walk when it reached a high or samaforo began to tremble until it goes out. Then I need to help me indicating if you know what the opening that the valve should have or that has nothing to do and my fault can be something else. Thanks for the usual support.