The EVAP (Evaporative Emission Control) System is designed to prevent fuel vapors from escaping into the atmosphere. It does this by collecting the vapors in a charcoal canister and then purging them into the engine to be burned.
A leak in the EVAP system can cause fuel vapors to escape, which can lead to increased emissions and a decrease in fuel economy.
EVAP System Leak Location
The EVAP system is located under the hood of the vehicle. The charcoal canister is usually located near the fuel tank. The EVAP system also includes a number of hoses and pipes that connect the canister to the fuel tank, the engine, and the purge valve.
How to Find an EVAP System Leak
There are a few ways to find an EVAP system leak. One way is to use a smoke machine. A smoke machine will introduce a smoke into the EVAP system, and the smoke will leak out at the point of the leak.
Another way to find an EVAP system leak is to use a pressure tester. A pressure tester will pressurize the EVAP system, and the pressure will drop if there is a leak.
EVAP System Leak Repair
Once you have found an EVAP system leak, you will need to repair it. The repair will depend on the location and severity of the leak. Some EVAP system leaks can be repaired by simply tightening a loose hose or replacing a faulty gasket. Other leaks may require more extensive repairs, such as replacing the charcoal canister or the purge valve.
If you are not sure how to repair an EVAP system leak, you should take your vehicle to a qualified mechanic.
