Evening, I switched the valve cover seal on my B3 today. now I have the problem that it “crushes” in the engine compartment, which sometimes the cart pulls off somewhere wrong air. This “hisc” comes from the direction of the battery. Between the battery and the engine run 2 hoses, if you wobble at these changes the hissing. A spraying with brake cleaner/start help did not succeed. However, if you spray this stuff forward towards the front passenger headlight, the engine runs for kur ze time calm. So I think that the problem is to look at the wrong air… Does anyone know this problem?? Greeting Simon