Quote Originally Posted by tom4bren View Post
Eric,

I know the front pumpkin has a breather tube on the driver's side. I've never looked for one on the rear. If there is one and your's is clogged, that could cause the pressure differential.

Tom
Yes,i think the differentials got breating tube,they looks like rubber straws.

They aim upward,i don't know if they are removable so you can clean them