Colin Hughes
Explorer
Last week I had the front cover replaced on my 300 TDi. At the same time I had the 3 silicone hoses installed. Since then whenever I excelerate I can hear what I can only describe as a tinny whooshing sound. It seems like air is getting in somewhere but I don't see anything that looks out of place. It sounds louder up until about 80kps when overdrive kicks in when you can still hear it but it is less loud. The truck doesn't appear to be running differently and the mileage still seems to be around 29-30 mpg. Any ideas.