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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-629 STEP 7. Pressure test the evaporative emission system hose. (2) Remove the fuel cap. pump (Miller number 6872A) is operating properly. Perform (4) Connect the evaporative emission system pressure pump to the fuel filler neck. (5) Pressure test the system to determine whether any leaks are present. (6) After it is confirmed that pressure maintained, unplug hose E. (7) Disconnect the evaporative emission system pressure pump, and reinstall the fuel cap. (8) Connect hose E to the evaporative emission canister. YES : Go to Step 15 . STEP 8. Check vacuum for leaks in the evaporative YES : Go to Step 9 . Evaporative Emission Canister and Fuel Tank AC005140 HOSE E AC ACX01358 AC004932 HOSE E AH |