Evaporative Emission System: Notes
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The evaporative emission system has been designed to minimize the release of hydrocarbons from the fuel system into the atmosphere. The evaporative system components all work together with the ECM to prevent fuel vapor from escaping and route it to the intake manifold to be burned during normal combustion.
The leak detection system checks the integrity of the evaporative emission system by pressurizing the system.
- There are 3 different types of evaporative systems used. These systems are explained below.
- LDP EVAP SYSTEM
- TANK LEAK DIAGNOSTIC MODULE (DM - TL) EVAP SYSTEM
- NATURAL VACUUM LEAK DETECTION (NVLD) EVAP SYSTEM
- EVAP SYSTEM, CHECKING FOR LEAKS