Other systems use a dedicated pump to run a similar test, but usually when the vehicle is not running. Some systems use a vacuum/pressure sensor to detect when vacuum is in the system and how long it’s able to hold it. Depending on the model, the EVAP system can test itself for leaks using different strategies. The EVAP system, to work most effectively, should be completely sealed, including the fuel cap, tubes, valves, canister, and fuel tank. A series of valves regulates the flow of air and vapors into the system, the general idea being to route them to the engine to be burned. The charcoal canister is filled with activated charcoal, whose huge surface area readily absorbs fuel vapors. Tubes connect various parts of the fuel system, such as the fuel filler tube, fuel tank, and engine intake, to the charcoal canister. Check Engine Light On? Check Your Gas Cap, First!.
0 Comments
Leave a Reply. |