Thread: Funny noise from Focus RS
View Single Post
Old Dec 4, 2006 | 08:48 AM
  #4  
Dan_FRS's Avatar
Dan_FRS
Virgin
 
Joined: Mar 2006
Posts: 12
Likes: 0
Default Whistle Noise
I had a high pitched squeel that turned out to be an air leak when i had the K&N on. Check your hoses for air leaks
Reply
0