LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Removal & Installation >> Emission Systems & Sub-Systems >> EVAP System Cleaning >> Inspection Procedure

Inspection Procedure

NOTE: DO NOT perform this procedure unless instructed by an Evaporative Emission (EVAP) diagnostic.
NOTE: Use Evaporative Emission System Tester (J-41413-200) in order to provide a clean, dry, low pressure gas source. Do not substitute any other pressurized gas source. Damage may result to the EVAP system.
  1. Turn ignition off. Remove EVAP canister purge solenoid. See EVAP CANISTER PURGE SOLENOID  under SOLENOIDS. Lightly tap the EVAP canister purge solenoid on a clean, hard surface. Inspect for carbon particles exiting either of the vacuum ports. If no carbon particles are found, reinstall EVAP canister purge solenoid and perform CLEANING PROCEDURE .
  2. If carbon particles are found during the inspection procedure, replace EVAP canister purge solenoid and perform CLEANING PROCEDURE . If you were instructed to replace the EVAP canister purge solenoid, and no carbon particles are found, return to the EVAP diagnostic procedure. DO NOT perform the CLEANING PROCEDURE .