Willygee Posted September 6, 2022 Share Posted September 6, 2022 Does my 2016 2.5L Evaporative Emissions System Leak Detection Pump run on vacuum or pressure? Quote Link to comment Share on other sites More sharing options...
Don Ridley Posted September 6, 2022 Share Posted September 6, 2022 The evap system does a complete system leak check using vacuum and pressure. Vacuum comes from the engine and pressure comes from natural sloshing of gasoline in the tank. What problem or error code are your trying to solve. There are detailed descriptions of the evap tests and how and when they are conducted. It's pretty complicated. Quote Link to comment Share on other sites More sharing options...
Willygee Posted September 6, 2022 Author Share Posted September 6, 2022 40 minutes ago, Don Ridley said: The evap system does a complete system leak check using vacuum and pressure. Vacuum comes from the engine and pressure comes from natural sloshing of gasoline in the tank. What problem or error code are your trying to solve. There are detailed descriptions of the evap tests and how and when they are conducted. It's pretty complicated. No issues with my van but I had to loan scan tool out to two of my neighbors one with a Kia Soul and one with a Jeep Grand Cherokee... Both with evap codes. This piqued my interest on how our systems work. Quote Link to comment Share on other sites More sharing options...
Don Ridley Posted September 6, 2022 Share Posted September 6, 2022 This is a good explanation: Ford's Evap System: Operation & Testing | MOTOR Other vehicles are similar because the tests are required by EPA. Quote Link to comment Share on other sites More sharing options...
Willygee Posted September 7, 2022 Author Share Posted September 7, 2022 1 hour ago, Don Ridley said: This is a good explanation: Ford's Evap System: Operation & Testing | MOTOR Other vehicles are similar because the tests are required by EPA. Thanks DR...that is a thorough breakdown. Quote Link to comment Share on other sites More sharing options...
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