EVAP EMISS SYSTEM

2003 Jeep Liberty

Tiny

Anonymous

December, 8, 2012 AT 5:12 PM

Evap Emiss System. I am getting a code for a large leak. I repaired all the leaks and continued to see the code. I isolated the front part from the evap cannister to the purge valve from the rear part of the evap system by bypassing the evap cannister (i.E. Connected the inlet and outlet hoses to the evap cannister together). The code went away. I checked the upper front of the evap system again for leaks from the evap cannister to the purge valve. There were no leaks. I replaced the purge valve connected everything up as normal and the large leak code appeared. Is it possible that the leak detection pump could be the culprit? Is there a way to test the leak detection pump to verify it is working correctly? I am not sure what else could be causing the large leak.

Thanks

Evap Emissions System Puzzled.

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