Escort MK7 ALL 1.8l 85kw 115hp 190.000km I noticed something since Wednesday. If mine is cold and I want to start this one it goes normally to the 1000U/min then it goes a little up then down to 700U/min then again a little up then down to 300U/min and then it goes completely out. The second time it starts exactly the same again. The third time it goes normal. But I noticed that when everyone starts a metallic noise is to be heard. No matter if e It is a sound, you take an empty can and knock with a metal object (cutlery) and knock against it. What is that and what does that mean? Is that a sign that I should change the Lambda probe or rather something with the KAT? Or is it something in the engine block? Impossible ignition is excluded! I thank you for your help. in advance.