Booster failure from rich-running engine
from Brake & Front End
This issue can apply to all vehicles with gasoline fuel-injected engines and vacuum boosters. Its cause is a rich-running engine due to improper fuel management causes excess gas or gasoline fumes to enter the booster, thus destroying the diaphragm.
7701 Las Colinas Blvd., Ste. 800, Irving, TX 75063