Originally Posted by jwick

Double check the side port. The one next to the 1/8th NPT port. I'm pretty sure that's where my leak was. It tight but not tight enough from the factory. Put 19mm on it and snugnit down real good. If you mount it in a similar location as I did you can check and tighten it from the top without pull the undershroud or getting under the car. I had to buy a stub 19mm to get on it though. I'll be making it part of my weekend maintenance.