Helpful Automotive Resources
Symptoms of a Bad Air Injection Check ValveNot all vehicles have an AIR system—but those that do can experience problems with an AIR check valve (also known as an air inject check valve or an air pump check valve).
Emission Control SystemsThe purpose of the positive crankcase ventilation (PCV) system, is to take the vapors produced in the crankcase during the normal combustion process, and redirecting them into the air/fuel intake system to be burned during combustion. These vapors dilute the air/fuel mixture so they have to be carefully controlled and